the process of making estimates and drawing conclusions about one or more characteristics of a population through analysis of sample data drawn from the population is known as . a. deductive inference b. statistical inference c. inductive inference d. bayesian inference
Answers
The process of making estimates and drawing conclusions about one or more characteristics of a population through analysis of sample data drawn from the population is known as statistical inference.
What is statistical inference?
Inferential statistical analysis infers attributes of a population, for instance by testing hypotheses and generating estimates. Statistical inference is the process of employing data analysis to infer properties of an underlying probability distribution. The observed data set is thought to be a sample of a broader population. Comparable to descriptive statistics is inferential statistics. The focus of descriptive statistics is exclusively on the characteristics of the observed data; it is not predicated on the idea that the data are representative of a wider population. In machine learning, the phrase "create a prediction by evaluating an already trained model" is commonly used instead of "infer." Statistical inference uses data that has been sampled from a population to make claims about that population.
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Related Questions
3) The temperature was -27°F and then it dropped another 7 degrees. What was the temperature after the drop?
Answers
Answer:
-34°F
Step-by-step explanation:
-27 - 7 = -34
or
27 + 7 = 34 = -34
I hope this helps! have a wonderful rest of ur day :)
Aerin's friend Fritz gives her a riddle to solve about the ages of the people in his family. There are 5 people in Fritz's family: Mom, Dad, his sisters Adele and Erika, and Fritz. Here are the clues to the puzzle. 1) Mom is 8 years younger than Dad. 2) Dad is 2 times as old as Fritz. 3) Adele is 4 years old. 4) Fritz's age plus Adele's age equals Erika's age. 5) Mom was 24 when Erika was born. 6) In 9 years, Mom will be twice as old as Erika will be. All the ages are whole numbers. Aerin decides to use variable for the unknown ages and write equations to express the information. M
Answers
Answer:
Dad = 47, Mom = 39, Fritz = 11, Erika = 15 and Adele = 4
Step-by-step explanation:
Let M = Mom's age, D = Dad's age, F = Fritz's age, A = Adele's age and E = Erika's age.
Given that
1) Mom is 8 years younger than Dad, we have D = M + 8 (1)
2) Dad is 2 times as old as Fritz. D = 2F (2)
3) Adele is 4 years old. A = 4 (3)
4) Fritz's age plus Adele's age equals Erika's age. F + A = E (4)
5) Mom was 24 when Erika was born. M = E + 24 (5)
6) In 9 years, Mom will be twice as old as Erika will be. M + 9 = 2(E + 9) (6)
Substituting (5) into (6), we have
E + 24 + 9 = 2(E + 9)
E + 33 = 2E + 18
subtracting E from both sides, we have
2E - E + 18 = 33 + E - E
E + 18 = 33
subtracting 18 from both sides, we have
E + 18 - 18 = 33 - 18
E = 15
M = 15 + 24 = 15 + 24 = 39
From (4) F = E - A = 15 - 4 = 11
From (1) D = M + 8 = 39 + 8 = 47
So, their ages are Dad = 47, Mom = 39, Fritz = 11, Erika = 15 and Adele = 4
Someone help me find this answer
Answers
Good luck!
dan science magazine has a mass of 256.674 grams. what is the mass of his magazine rounded to the nearest tenth
Answers
Answer:
256.700 grams
Step-by-step explanation
the immediate number after the decimal is at the tenth position.
so, we will round off 6 by looking at the number next to it:
as the number next to it is greater than 5 so 1 will be added to the number in tenth position for rounding.
thus, the mass of his magazine rounded to the nearest tenth is,
256.700 grams
MULTIPLE CHOICE
Souvenir hats, t-shirts, and jackets are sold at a rock concert. Three hats, two t-shirts, and one jacket cost $140. Two hats, two
t-shirts, and two jackets cost $170. One hat, three t-shirts, and two jackets cost $180. Find the prices of the induvial items.
Answers
Answer:
Hats cost $15, T-Shirts cost $25, Jackets cost $45
If this was helpful please mark brainliest, have a great day!
3) Write an equation with a slope of 6 and a y-intercept of 3:
4) Write an equation with a slope of 1.5 and a y-intercept of -5:
Answers
4. y=1.5x-5
(i haven’t done algebra in while but i think those are the answers) hope it helps!
*PLEASE HELP ASAP ITS A TEST* How many solutions does the system of linear equations represented in the graph below have?
Answers
Answer:
0
Step-by-step explanation:
The 2 lines never intersect so there are 0 solutions
two cards are drawn, with replacement, from a standard deck. what is the expected value of the minimum of the two cards? (let aces count as 1, jacks as 11, queens as 12, and kings as 13)
Answers
The expected value of the minimum of two cards drawn with replacement from a standard deck is 6.96.
We can approach this problem by finding the probability distribution of the minimum card value. Let X be the value of the first card and Y be the value of the second card. Then the minimum card value, Z, is given by Z = min(X,Y).
To find the probability distribution of Z, we can use the fact that P(Z > z) = P(X > z)P(Y > z), where z is any card value. Since each card has an equal probability of being drawn, we have P(X > z) = P(Y > z) = (14-z)/13, for z = 1,2,...,13 (note that we include 14 because aces count as 1).
Therefore, the probability distribution of Z is given by:
P(Z = 1) = (1/13)^2
P(Z = 2) = 2(2/13)(11/13)
P(Z = 3) = 2(3/13)(10/13)
P(Z = 4) = 2(4/13)(9/13)
P(Z = 5) = 2(5/13)(8/13)
P(Z = 6) = 2(6/13)(7/13)
P(Z = 7) = 2(7/13)(6/13)
P(Z = 8) = 2(8/13)(5/13)
P(Z = 9) = 2(9/13)(4/13)
P(Z = 10) = 2(10/13)(3/13)
P(Z = 11) = 2(11/13)(2/13)
P(Z = 12) = 2(12/13)(1/13)
P(Z = 13) = (13/13)^2
The expected value of Z is then given by:
\(E(Z) = 1(1/169) + 2(44/169) + 3(60/169) + 4(72/169) + 5(80/169) + 6(84/169) + 7(84/169) + 8(80/169) + 9(72/169) + 10(60/169) + 11(44/169) + 12(24/169) + 13(1/169)\)
E(Z) = 6.96
Therefore, the expected value of the minimum card value is 6.96.
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Write the event as set of outcomes. We flip three coins and obtain more tails than heads.
A. {ttt}
B. {ttt, tth, tht, htt}
C. {ttt, tth}
D. {tth, tht, htt}
Answers
Answer:
B.
Step-by-step explanation:
All the possible outcomes are listed on choice B.
The event is a set of outcomes. if we flip three coins and obtain more tails than heads is E = {ttt, tth, tht, htt} option (B) is correct.
What is set?A set is a collection of clearly - defined unique items. The term "well-defined" applies to a property that makes it simple to establish whether an entity actually belongs to a set. The term 'unique' denotes that all the objects in a set must be different.
We have three coins.
As we know, in a coin there are two sides head and a tail.
If we flip three coins then the set of all the possible outcomes:
O = {HHH,HHT,HTH,HTT,THH,THT,TTH,TTT}
The set of outcomes has more tails than heads.
E = {ttt, tth, tht, htt}
We can find the probability, the probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.
Probability = 4/8 = 1/2
Thus, the event is a set of outcomes. if we flip three coins and obtain more tails than heads is E = {ttt, tth, tht, htt} option (B) is correct.
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When Mark was looking at his monthly utility payments, he noticed that one payment was significantly lower than all the others. Which of the following would be most affected by Mark's observation? The median, average, highest, most frequent monthly payment
Answers
Answer:
The average monthly payment would be most affected by Mark's observation of one significantly lower payment. The reason is that the average is calculated by summing all the payments and dividing by the total number of payments, so any extreme values (such as the significantly lower payment) can have a substantial impact on the average value.
Step-by-step explanation:
I need help with this!!
Answers
Answer:
i think c
Step-by-step explanation:
hope it helps :)
Slope= the variable m
m=rise/run; m=change in y/change in x
We need to find the rate of how much the taxi driver charges per minute.
Therefore:
We need to pick a precise point on the line ( a precise point is a point with whole number x and y coordinates; no decimals or fractions).
We see that the point (6, 9) is precise.
A rate is a ratio in the form of a fraction that shows the relationship of change between two quantities: a/b.
So, the taxi costs 9 dollars / 6 minutes.
9/6 simplifies 2/3.
And thus, the taxi charges 2 dollars per 3 minutes
So, the answer is 9/6, which can be simplified to the furthest possibility, making it a unit rate.
Answer: 9/6
Can someone help with this, i don’t know how to do it
Answers
Answer:
X=12
Step-by-step explanation:
In all Triangle, the sum of the interior angles =180
180-86-46=4x
4x=48
x=12
the expression 14x 3 represents the perimeter of the triangle. what is the length of the third side
Answers
construct triangle xyz in which xy is 8.2 angle xyz is 40° angle xzy is 78° measure xy . using ruler and compass only construct the locus of a point equidistant from y and z and construct a point Q on this locus , equidistant from yx and yz
Answers
a. triangle XYZ
Draw a line segment XY of length 8.2 cm using a ruler.At point X, draw a ray with an angle of 40° using a compass. Label the intersection of this ray with XY as point Z.From point Z, draw another ray with an angle of 78°, again using a compass. Label the intersection of this ray with XY as point Y.Triangle XYZ is now constructed, with XY measuring 8.2 cm, angle XYZ measuring 40°, and angle XZY measuring 78°.b. Locus of a point equidistant from Y and Z:
Draw arcs with centers at points Y and Z using a compass. Ensure that the arcs intersect.Label the intersection points as A and B.Draw a line segment AB, which represents the locus of points equidistant from Y and Z.c. Construct point Q on this locus, equidistant from YX and YZ:
Draw arcs with centers at points Y and Z using a compass, with the same radius as before.Let the arcs intersect YX at point C and YZ at point D.Draw a line segment CD, which represents the locus of points equidistant from YX and YZ.Point Q is the intersection of line segment AB and line segment CD.How to construct the pointsTo construct a line, we have to;
Draw the longest side of the triangle using a rulerUse a compass to draw an arc from each endpoint of the line, Draw a line from the endpoint of each side of the basLabel the angles and side, leaving the construction lines .Learn more about construction of triangles at: https://brainly.com/question/31275231
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Ridgewood Savings Bank charges a $27 per check overdraft protection fee. On July 8, Nancy had $1,400 in her account. Over the next 4 days, the following checks arrived for payment at her bank: July 9, $1,380.15; July 10, $670 and $95.67; July 11, $130; and July 12, $87.60.
How much will she owe the bank after July 12?
Answers
If Ridgewood Savings Bank charges a $27 per check overdraft protection fee. The amount she will owe the bank after July 12 is: $1,071.42.
What is total obligation?Total obligation can be defined as the amount a person owe another person or the debt amount a borrower is expected to payback to a lender.
Balance $1,400
July 9 check ($1,380.15)
Balance $19.85
July 10 check ($765.67)
($670 + $95.67)
Balance -$745.82 (Overdraft)
Now let find the amount she owe
Balance -$745.82
July 11 check $130
Balance -$875.82
July 12 check $87.60
Ending balance -$963.42
Overdraft fee $108
($27 ×4)
Total obligation -$1,071.42
Therefore her total obligation is $1,071.42.
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Find the volume of the irregular
figure.
Answers
Answer:
59 cm^3
Step-by-step explanation:
You can split the shape into two rectangular prisms.
3*3*1=9
10*5*1=50
9+50=59
finding dilations geometry
Answers
Answer:
(-6, -2)
Step-by-step explanation:
so, the coordinate of A is (-3,-1)
the scale factor is 2
you want to multiply the coordinate by the scale factor
(-3 x 2, -1 x 2)
(-6, -2)
(-6, -2) is your answer :)
A shop sells packets of envelopes.
There are 5 envelopes in a small packet.
There are 20 envelopes in a large packet.
There is a total of T envelopes in x small packets and y large packets.
Write down a formula for T in terms of x and y.
Answers
9514 1404 393
Answer:
5x +20y = T
Step-by-step explanation:
There are 5 envelopes in each of x small packets, for a total of 5x envelopes in small packets.
There are 20 envelopes in each of y large packets, for a total of 20y envelopes in large packets.
The total number envelopes is then ...
T = 5x +20y
How many 5-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, if repetition of digits is not allowed?
a.
119
c.
2520
b.
16,807
d.
120
Answers
answer
c) 2520
Step-by-step explanation:
1st digit 1 of 7
2nd digit 1 of 6
3rd digit 1 of 5
4th digit 1 of 4
5th digit 1 of 3
7*6*5*4*3=2520 combination
Find the values of x and y.
Answers
The value of x is 5.
The value of y is 40°.
What is a triangle?It is a two dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
A composite figure that has three triangles.
Two equilateral triangles.
One isosceles triangle.
We see that,
Both equilateral triangles have the same sides and the same angles.
5x - 1 = 24
5x = 24 + 1
5x = 25
x = 5
We see that,
Let the opposite angle of 6y° = m
6y° + 60 + 60 + m = 360
6y + 120 = 360
6y = 360 - 120
6y = 240
y = 40°
Thus,
x = 5 and y = 40°
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On July 18, Sallie deposits $1,400 in an account which earns 3.5% interest
compounded daily and on September 4 Sallie withdraws $1,200 from the account
because of an unexpected expense. Find the
account balance after the withdrawal.
(Round to the nearest penny)
Answers
The account balance after the withdrawal is approximately $222.47.
To find the account balance after the withdrawal, we need to calculate the interest earned on the initial deposit and subtract the withdrawal amount from it.
First, let's calculate the number of days between July 18 and September 4:
Number of days = September 4 - July 18 = 48 days
Next, let's calculate the daily interest rate based on the annual interest rate of 3.5%:
Daily interest rate = (3.5% / 100) / 365 = 0.00009589
Now, let's calculate the interest earned on the initial deposit of $1,400 for 48 days using the daily compound interest formula:
Interest = Principal * (1 + Daily interest rate)^(Number of days)
Interest = 1400 * (1 + 0.00009589)^48
Calculating this expression gives us:
Interest = 1400 * (1.00009589)^48 ≈ $22.47
The total balance before the withdrawal is the initial deposit plus the interest earned:
Total balance = 1400 + 22.47 ≈ $1422.47
Finally, we subtract the withdrawal amount of $1,200 from the total balance to find the account balance after the withdrawal:
Account balance after withdrawal = 1422.47 - 1200 ≈ $222.47
Therefore, the account balance after the withdrawal is approximately $222.47.
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Find the missing side or angle. Round to the nearest tenth. a=4 b=5 c=7
Answers
Using the law of cosines, the missing angles are:
A = 34.1°, B = 44.4°, C = 101.5°
What is the Law of Cosines?The law of cosines is used to solve a triangle when given the lengths of the three sides of a triangle, and it is expressed by the formula:
c² = a² + b² - 2ab × Cos C.
Given the following:
a = 4 b = 5 c = 7Find C by substituting the values into the law of cosines formula:
7² = 4² + 5² - 2 × 4 × 5 × Cos C
49 = 16 + 25 - 40 × Cos C
49 = 41 - 40Cos C
49 - 41 = -40Cos C
8/-40 = Cos C
-0.2 = Cos C
C = Cos^(-1)(-0.2)
C = 101.5°
Find B using the Law of Sines:
sin B/b = sin C/c
Substitute
sin B/5 = sin 101.5/7
(sin B)(7) = (sin 101.5)(5)
sin B = (sin 101.5)(5)/7
sin B = 0.69995
B = Sin^(-1)(0.69995)
B = 44.4°
Find the measure of angle A using the triangle sum theorem:
A = 180 - 101.5 - 44.4
A = 34.1°
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The regular price for a pair of jeans is $36. the sale price is 45% off the regular price. What is the sale price of jeans?
Answers
Answer:
16.2
Step-by-step explanation:
Change the 45% into 0.45 and then multiply it by 36.
Question 8
Segment ST has endpoints of S(6, 14) and T(1, 2). What is the distance between
the two endpoints?
Answers
13 units is the answer.......
hope it helps...
triangle A’ B’ C’ is the image of triangle ABC
pls help i am so stuck!
Answers
The horizontal change from triangle ABC to triangle ABC include the following: A. right 5 units.
The vertical change from triangle ABC to triangle ABC include the following: C. down 2 units.
The translation rule in the standard format is: (x, y) → (x + 5, y - 2).
What is a translation?In Mathematics, the translation of a graph to the left is a type of transformation that simply means subtracting a digit from the value on the x-coordinate of the pre-image while the translation of a graph to the right is a type of transformation that simply means adding a digit to the value on the x-coordinate of the pre-image.
By translating the pre-image of triangle ABC horizontally right by 5 units and vertically down 2 units, the coordinate A of triangle ABC include the following:
(x, y) → (x + 5, y - 2)
A (3, 5) → (3 + 2, 5 - 2) = A' (5, 3).
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
PLS HELP ME IF YOU CAN!!!
Geometry
Explain if you want (optional)
Answers
Answer:
Step-by-step explanation:
a grain silo consists of a cylindrical main section and a hemispherical roof of the total volume of the silo (including the part inside the roof section) is 10,000 find.the.cylindrical part is 30 ft tall, what is the radius of the silo, correct to the nearest tenth of a foot?
Answers
The radius of the silo which is in the shape of cylinders and spheres , correct to the nearest tenth of a foot, is approximately 10.3 feet.
To find the radius of the silo, we need to determine the radius of the cylindrical section.
The volume of the cylindrical section can be calculated using the formula:
\(V_{cylinder} = \pi * r^2 * h\)
where \(V_{cylinder}\) is the volume of the cylindrical section, r is the radius of the cylindrical section, and h is the height of the cylindrical section.
Given that the cylindrical section is 30 ft tall, we can rewrite the formula as:
\(V_{cylinder} = \pi * r^2 * 30\)
To find the radius, we can rearrange the formula:
\(r^2 = V_{cylinder} / (\pi * 30)\)
Now, we can substitute the total volume of the silo, which is 10,000 cubic feet, and solve for the radius:
\(r^2 = 10,000 / (\pi * 30)\)
Simplifying further:
\(r^2 = 106.103\)
Taking the square root of both sides, we find:
\(r = \sqrt{106.103} = 10.3\)
Therefore, the radius of the silo which is in the shape of cylinders and spheres , correct to the nearest tenth of a foot, is approximately 10.3 feet.
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Scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a standard deviation of 6.1 points. What is the minimum score you would need to be in the top 7%? 0.93 1.48 85.4 81.4
Answers
the minimum score needed to be in the top 7% is 85.48, which can be rounded to 85.4. To determine the minimum score needed to be in the top 7%, we need to use the properties of the normal distribution and the corresponding z-score.
First, we need to find the z-score that corresponds to the top 7%. This can be done by using the standard normal distribution table or a calculator with a normal distribution function. The z-score that corresponds to the top 7% is approximately 1.48.
Next, we can use the formula for transforming a z-score to a raw score:
raw score = z-score * standard deviation + mean
Substituting the values given in the problem, we get:
raw score = 1.48 * 6.1 + 76.4
raw score = 85.48
Therefore, the minimum score needed to be in the top 7% is 85.48, which can be rounded to 85.4.
In conclusion, the minimum score needed to be in the top 7% is 85.4. This calculation was performed by finding the z-score that corresponds to the top 7%, and then transforming the z-score to a raw score using the mean and standard deviation of the distribution.
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WILL MARK BRAINLIEST, PLEASE DON'T DO THOSE OFFSITE LINKS I KNOW BETTER THAN TO CLICK EM
What is the value of 12x^-3 y^-1 for x=-1 and y=5
A.-12/5
B.-180
C.-60
D.-5/12
This is the only question I've ever had like this, have no clue what it means so please help.
please I need to get this turned in ASAP it's the only one I don't know, I've tried everything else, and I don't want to risk it by guessing.
Answers
Answer:
A p
Step-by-step explanation:
We have
\(12x {}^{ - 3} y {}^{ - 1} \)
Remeber that
\(x {}^{ - n} = \frac{1}{x {}^{n} } \)
\(12 \frac{1}{x {}^{3} } \frac{1}{y {}^{1} } \)
Now, plug in
So now we plug in -1 for x and 5 for y
\(12 \frac{1}{ { - 1}^{3} } \frac{1}{5 {}^{1} } \)
Simplify
\( - \frac{12}{5} \)
A is the answer.
Find where the graphs intersect; f(x)=2x+3 and g(x)=-0.5x+7
Answers
Step 1
Given
\(\begin{gathered} f(x)=\text{ 2x+3} \\ g(x)\text{ = -0.5x+7} \end{gathered}\)Required: To find where the graph of both functions intersect. In other words the find the value of x and hence f(x) and g(x).
Step 2
Solve both equations simultaneously.
\(\begin{gathered} we\text{ will take f(x) and g(x) = y, so that} \\ y=2x+3\text{ -----(1)} \\ y=-0.5x+7----(2) \\ \end{gathered}\)Subtract equation 2 from 1
Hence,
\(\begin{gathered} 4=\text{ 2.5x} \\ \frac{4}{2.5}=\frac{2.5x}{2.5} \\ x\text{ = 1.6} \end{gathered}\)Step 3
Check
\(\begin{gathered} f(x)\text{ = 2x+3} \\ f(1.6)=\text{ 2(1.6) + 3 = 6.2} \\ g(x)=\text{ -0.5x+7} \\ g(1.6)=\text{ -0.5(1.6) +7 = 6.2} \\ \text{since the check gave us the same values, x = 1.6} \\ \text{And the coordinate point of the solution will be ( 1.6, 6.2)} \end{gathered}\)Hence the graph intersects at the point where x = 1.6 and y =6.2. Remember y = f(x) and g(x)
