Using the z-distribution, it is found that since the test statistic is greater than the critical value for the right-tailed test, this result shows that Zwerg can correctly follow this type of direction by an experimenter more than 50% of the time.
What are the hypothesis?At the null hypothesis, it is tested if Zwerg cannot correctly follow this type of direction by an experimenter more than 50% of the time, that is:\(H_0: p \leq 0.5\)
At the alternative hypothesis, it is tested if Zwerg can correctly follow this type of direction by an experimenter more than 50% of the time, that is:\(H_1: p > 0.5\)
Test statisticThe test statistic is given by:
\(z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}\)
In which:
\(\overline{p}\) is the sample proportion.p is the proportion tested at the null hypothesis.n is the sample size.For this problem, the parameters are:
\(n = 48, \overline{p} = \frac{37}{48} = 0.7708, p = 0.5\)
The value of the test statistic is:
\(z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}\)
\(z = \frac{0.7708 - 0.5}{\sqrt{\frac{0.5(0.5)}{48}}}\)
\(z = 3.75\)
Considering a right-tailed test, as we are testing if the proportion is greater than a value, with a significance level of 0.05, the critical value for the z-distribution is \(z^{\ast} = 1.645\).
Since the test statistic is greater than the critical value for the right-tailed test, this result shows that Zwerg can correctly follow this type of direction by an experimenter more than 50% of the time.
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Write 117mm cubed as a fraction of 0. 7 cm cubed
Expression as a fraction of 0.7 cm³ for 117 mm³ is given by the fraction 0.117 / 0.7.
To write 117 mm³ as a fraction of 0.7 cm³,
we need to convert the units so they match.
Since there are 10 millimeters in a centimeter
1 cm = 10 mm
This implies,
1 cm³ = (10 mm)³
= 1000 mm³
Now we can express 117 mm³ as a fraction of 0.7 cm³:
117 mm³ / 0.7 cm³
To convert mm³ to cm³, we divide by 1000,
117 mm³ / 1000 = 0.117 cm³
Now we can express it as a fraction,
0.117 cm³ / 0.7 cm³
Simplifying the fraction, we divide the numerator and the denominator by 0.117,
= (0.117 cm³ / 0.117 cm³) / (0.7 cm³ / 0.117 cm³)
= 1 / (0.7 / 0.117)
To divide by a fraction, we multiply by its reciprocal:
= 1 × (0.117 / 0.7)
= 0.117 / 0.7
Therefore, 117 mm³ is equal to the fraction 0.117 / 0.7 when expressed as a fraction of 0.7 cm³.
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If the failure rate of the second calculator is the same and independent of the first, what is the probability of both calculators failing?
Let's denote this probability as p, where p represents the probability of a single calculator failing. Therefore, the probability of both calculators failing is given by \(p^2\).
If the failure rate of the second calculator is the same and independent of the first, we can assume that the probability of failure for each calculator remains constant. To determine the probability of both calculators failing, we need to multiply the probabilities of each calculator failing independently. Since the events are independent, we can multiply the individual probabilities together.
Probability of both calculators failing = Probability of first calculator failing * Probability of second calculator failing
= p * p
= \(p^2\)
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Factor completely
4x^2-1
Answer:
(2x - 1)(2x + 1)
Step-by-step explanation:
Difference of Squares: (ax + b)(ax - b) = (ax² - b²)
Answer:
4×^2-1=(2× +1)(2× -1)
Step-by-step explanation:
using a^2 - b^2 =(a+b)(a-b)
write a subtraction problem involving two positive integers with a negative diffrence.
Algebra 2 help ASAP... Please I'm being times I have 29mins left!!!!
Answer: -27a³b⁶ + 8a⁹b¹²
Step-by-step explanation:
26. G(9, 12), H(−2, −15), J(3, 8) and
G'(9, -2), H'(-2, 25), J'(3, 2)
The transformation between the points is (x, y) = (x, -y + 10)
How to determine the transformationFrom the question, we have the following parameters that can be used in our computation:
G(9, 12), H(−2, −15), J(3, 8) and
G'(9, -2), H'(-2, 25), J'(3, 2)
We can see that the x coordinates of the image and the preimage are equal
However, the relationship between the y-coordinates is
y' = -y + 10
This means that
(x, y) = (x, -y + 10)
The above rule is a translation transformation
Translation transformation is a transformation that moves each point in a figure or object by a fixed distance in a specified direction.
Hence, the transformation is (x, y) = (x, -y + 10)
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Complete question
26. G(9, 12), H(−2, −15), J(3, 8) and G'(9, -2), H'(-2, 25), J'(3, 2)
Write out the transformation rule from GHJ to G'H'J'
Fwam took a taxi from his house to the airport. the taxi company charged a pick-up
fee of $3.80 plus $2.25 per mile. the total fare was $33.05, not including the tip.
write and solve an equation which can be used to determine m, the number of miles
in the taxi ride.
equation:
rich rodney dor
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0
The taxi ride was 13 miles long.
The equation to determine the number of miles in the taxi ride is: 3.80 + 2.25m = 33.05
To solve this equation, we need to isolate the variable m. We can do this by subtracting 3.80 from both sides of the equation, which gives us: 2.25m = 29.25
We can then divide both sides of the equation by 2.25 to find the value of m: m = 13
This means that the taxi ride was 13 miles long. To confirm that this is the correct solution, we can substitute 13 for m in the original equation and see if it results in a true statement. 3.80 + 2.25(13) = 3.80 + 28.25 = 33.05, which is equal to the total fare, so our solution is correct.
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Subtract
1/13
31
55
62
110
2
3/5
55
7
10
-
3
22. Simplify the answer.
When we subtract 3 from 22, the simplified answer is 19. The subtraction operation involves removing or deducting one value from another, resulting in the difference between the two quantities.
To subtract 3 from 22, we can perform the subtraction operation as follows:
22
3
19
We align the numbers vertically and subtract each corresponding place value from right to left. In this case, subtracting 3 from 2 requires borrowing or regrouping. However, since 2 is greater than 3, we can directly subtract 3 from 2 and write the difference, which is 1, in the one's place.
Therefore, the simplified answer is 19.
The subtraction process involves taking away or removing a certain quantity from another. In this case, we subtracted 3 from 22, resulting in a difference of 19. The process of simplifying the answer is simply expressing the result in its most concise and reduced form.
By subtracting 3 from 22, we removed 3 units from the original value of 22, leaving us with 19. This can be visualized as taking away three objects from a group of 22 objects, resulting in a remaining count of 19.
In summary, when we subtract 3 from 22, the simplified answer is 19. The subtraction operation involves removing or deducting one value from another, resulting in the difference between the two quantities.
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What is the surface area of the cylinder with height g in and radius 4 in? Round your
answer to the nearest thousandth.
Answer:
if you want ans area of cylider is 2πrh+2πr2
Step-by-step explanation:
need thanks and make me brainiest if it helps you
You borrow $2000 for three years at an annual interest rate of 12% what is the total cost of the loan at the end of the three years
Answer:
2,391 paid altogether. The interest Rate was another 391 dollars.
Step-by-step explanation:
Kala wrapped 48 gifts. Kala wrapped 6 times as many gifts as Juan. Let n be the number of gifts that Juan wrapped.
Answer:
Juan wrapped n gifts.
Kala wrapped 6n gifts. (because she wrapped 6 times as many gifts as Juan)
Kala wrapped 48 gifts in total (as stated in the problem)
So, 6n = 48
n = 8 (by dividing both sides by 6)
So, Juan wrapped 8 gifts.
Answer:
8 gifts.
Step-by-step explanation:
If Juan wrapped n gifts, then Kala wrapped 6n gifts because Kala wrapped 6 times as many gifts as Juan.
And we know that Kala wrapped 48 gifts, so we can set up an equation:
6n = 48
To find the number of gifts Juan wrapped, we can divide both sides of the equation by 6:
n = 48/6
n = 8
So Juan wrapped 8 gifts.
a random sample of 10 subjects have weights with a standard deviation of 12.5915 kg. what is the variance of their weights? be sure to include the appropriate units with the result. question content area bottom part 1 the variance of the sample data is
The variance of the weights of the 10 subjects is 158.6527 kg^2.
The variance of a sample data measures how spread out the individual values are from the mean. To calculate the variance, you need to square the standard deviation.
Given that the standard deviation of the weights of the 10 subjects is 12.5915 kg, we can calculate the variance using the following steps:
1. Square the standard deviation:
Variance = Standard deviation^2
Therefore, Variance = 12.5915^2 = 158.6527 kg^2
So, the variance of the weights of the 10 subjects is 158.6527 kg^2.
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can you please show work please
Answer:
1) y = 3x+5
2) y = \(\frac{1}{2}x-4\)
3) y = -x + 0
4) y = \(-\frac{5}{3}x+8\)
5) y = \(\frac{3}{5} x - 7\)
Step-by-step explanation:
y = mx+b
In slope-intercept form, these are important to know:
- y and x should stay as variables
- m = slope of the line
- b = y intercept
Using the facts above⬆, we can solve these problems
Remember: Substitute m and b using the given information
1) y = 3x+5
2) y = \(\frac{1}{2}x-4\)
3) y = -x + 0
4) y = \(-\frac{5}{3}x+8\)
5) y = \(\frac{3}{5} x - 7\)
Hope this helps :)
Have a great day!
help I am not sure of the answer it asks for the domain and the range thank you
Answer:
480 - 96x = 0, so x = 5.
Domain: [0, 5]
Range: [0, 480]
What type of sampling is described in this study?
A company that sells hair-care products wants to
determine if a product that combines shampoo and
conditioner works better than a shampoo and
conditioner used separately. A researcher recruits 60
volunteers and pairs them according to age, hair color,
and hair type. For each pair, the researcher flips a coin
to determine which volunteers will use the
shampoo/conditioner combination and which ones will
use the separate shampoo and conditioner. After using
the products for one month, the subjects are asked to
rate their satisfaction with the hair products on a scale
of 1-10 (1 = highly dissatisfied and 10 = highly
satisfied). What type of sampling is described in this study?
one sample
paired data
two samples
more than two samples
The sampling type in this study, where a researcher recruits 60 paired volunteers and asks them to rate their satisfaction after product use, is B. paired data.
What is a paired data test?A paired data test or sampling is used when the researcher is interested in the difference between two variables for the same subject.
For instance, in this experiment, the researcher wants to find the satisfaction level of the volunteers who used the shampoo and conditioner separately or combined.
Thus, the sampling type in this study, where a researcher recruits 60 paired volunteers and asks them to rate their satisfaction after product use, is B. paired data.
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HELP ASAPPPP. Thanks!!!
\( \bf \implies{m \angle{EHF} = 31 \degree}\)
Step-by-step explanation:Given:\( \bigg( \bf \angle{DHE} \: and \: \angle{EHF} \: are \: \\ \bf{complementary \: angles} \bigg)\)
To Find:\({ \bf \longrightarrow{m \angle{EHF} = \: ? }}\)
Solution:We know that,
Two angles are said to be complementary, if the sum of their measures is 90°. Two complementary angles are called the complement of each other.For example :- Angles measuring 55° and 35° are complementary angles because measure of their sum is 90°According to the question,\( \bf \longrightarrow{6x - 1+ 3x + 1 = 90 \degree}\)
\( \bf \longrightarrow{6x \cancel{- 1} + 3x \cancel{+ 1 }= 90 \degree}\)
\( \bf \longrightarrow{6x + 3x = 90 \degree}\)
\( \bf \longrightarrow{9x = 90 \degree}\)
\( \bf \longrightarrow{x = \frac{ \cancel{90} \degree}{ \cancel{9}} }10 \degree\)
\( \bf \longrightarrow{x = 10 \degree}\)
\({ \bf \longrightarrow{m \angle{EHF} = \: 3 \times 10 \degree + 1 \mapsto31 \degree }}\)
So, the correct option is (d)\( \bf \longrightarrow{m \angle{EHF} = 31 \degree}\)
100 POINTS! WILL MARK BRAINLIEST AND THANKS (reuploaded I forgot some info last time)
Qamar has enough lacquer to coat 600 square feet of flooring. Her client wants her
to build a room in the shape of a parallelogram.
C) Will Qamar have enough lacquer to cover the floor below? (pictured)
D) Justify your answer.
E) If your answer is “No,” how much more lacquer does she need? If your answer is
“Yes,” how much lacquer will she have left over? Show your work to justify your
answer.
Answer:
Step-by-step explanation: i Show you every step in the picture i just sent
Answer:
Step-by-step explanation: I don't know how to work on this
Find 3 ratios that are equivalent to the given ratio 3 over 6
what us the circumference of circular ground of diameter d m ? find it.
answer:
\(\pi d \: m\)
can you explain me how?
Here the diameter = dm
Formula of circumference for circle: 2πr or πd
where "d" is diameter and "r" is radius
diameter = 2(radius)For this question:
circumference:
π(d)π(dm)πdmHelp me with this please !!!
Answer:
x = 61°
Step-by-step explanation:
x and 61° are alternate exterior angles and are congruent, thus
x = 61°
Answer:
X=61.
Step-by-step explanation:
✍✍✍✍✍✍✍
need help asap please!
Answer:
A
Step-by-step explanation:
The area of the large triangle is 36*24/2
minus the small triangle which is 21*14/2
so 432-147 = 285
Directed line egment ¯¯¯¯¯¯ A B ha endpoint A ( − 8 , 7 ) and B ( 7 , − 3 ) What are the coordinate of P uch that P i the point partitioning ¯¯¯¯¯¯ A B in the ratio 1 : 4 ? Write each coordinate a a implified fraction if neceary
The coordinate of point P is (-5,5).
It is given that AB has endpoint A(-8,7) and B(7,-3) also P is the point partitioning AB in the ratio 1:4.
We have to find the coordinates of P.
So distance in x-coordinate between A and B is,
ABx = 7 - (-8) = 15 units
distance in y-coordinates between A and B is,
ABy = -3 - 7 = -10 units
Now the point P partitioning AB in the ratio 1:4
i.e \(\frac{AP}{AB}\) = \(\frac{1}{1+4}\)
\(\frac{AP}{AB}\) = \(\frac{1}{5}\)
we will find x-coordinate of point P
⇒ \(\frac{APx}{ABx}\) = \(\frac{1}{5}\)
⇒ \(\frac{APx}{15}\) = \(\frac{1}{5}\)
⇒ APx = 3
Therefore the x-coordinates of P is
Px = Ax + APx
⇒ Px = -8 + 3 = - 5
And y-coordinate of pint P is,
\(\frac{APy}{ABy}\) = \(\frac{1}{5}\)
\(\frac{APy}{-10}\) = \(\frac{1}{5}\)
APy = -2
i.e Py = APy + Ay
= -2 + 7
Py = 5
Therefore the coordinate of point y is (-5,5).
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A park began with a population of 8 rabbits. Every year, the rabbit population triples. How long will it take for the population to reach 1,944 rabbits? choose the equation for the population of rabbits, r, in terms of the number of years that have passed, y, and the correct solution.
When the population starts out with 8 people and triples, it will take 5 years to reach 1,944.
What is equation?The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.
Here,
Initial population=8
Final population=1944
Rate of increment=3ˣ
1944=8*3ˣ
1944/8=3ˣ
243=3ˣ
3ˣ=3⁵
x=5
It will take 5 years for the population to reach 1,944 when started with with the population of 8 and increase by 3ˣ.
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. in a classroom of 30 students, 3 of the students wear wrist watches. (a) if 14 students are selected with replacement, what is the probability that exactly 2 of them wear wrist watches? (b) if 14 students are selected without replacement,
Probability of
=0.0403.
The probability that exactly two of the 14 students selected with replacement will wear wrist watches is 3/30 * 2/29 * 27/28 * 26/27 = 0.0437.
The probability that exactly two of the 14 students selected without replacement will wear wrist watches is 3/30 * 2/29 * 26/28 * 25/27 = 0.0403.
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(20pts) Evaluate the line integral: f(x²dx + y²dy) where C consists of the arc of the circle x² + y² = 9 from (3,0) to (0,3), followed by the line segment from (0,3) to (5,4).
The line integral of f(x²dx + y²dy) along the path C, which consists of the arc of a circle from (3,0) to (0,3) followed by a line segment from (0,3) to (5,4), is equal to 41/2.
To evaluate the line integral over the arc of the circle, we parametrize the arc as r(t) = (3cos(t), 3sin(t)) with t ranging from π/2 to 0. By substituting this parameterization into the line integral expression ∫[π/2 to 0] f(x²dx + y²dy), we can calculate the contribution of the arc to the overall line integral. Using the given function f(x²dx + y²dy), we obtain ∫[π/2 to 0] f(9cos²(t)(-3sin(t)dt) + 9sin²(t)(3cos(t)dt).
Next, we evaluate the line integral over the line segment. We parametrize the line segment as r(t) = (5t, 3 + t) with t ranging from 0 to 1. Substituting this parameterization into the line integral expression ∫[0 to 1] f(x²dx + y²dy), we can determine the contribution of the line segment to the overall line integral. Using the function f(x²dx + y²dy), we have ∫[0 to 1] f((5t)²dt + (3 + t)²dt).
By evaluating both integrals separately and summing up their results, we find the total line integral along the given path C. In this case, the line integral evaluates to the value of 41/2.
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PLEASE HELP URGENTLY!!
Answer:
x = 69
Step-by-step explanation:
since AB is parallel to CD we can find the value of y with the following equation :
2y - 40 = 66 add 40 to both sides
2y = 110 divide both sides by 2
y = 55
from supplementary angles, we know that the exterior angle's measure is 124
since the sum of two interior angles in a triangle is equal to an exterior angle that is supplementary to the third interior angle
y + x = 124 we found value of y earlier
55 + x = 124 subtract 55 from both sides
x = 69
the average mortgage payment for citizens in a small city is $1900 with standard deviation $400. what proportion of the mortgage payments are between $700 and $3100?a. about 99.7% b. unknown c. about 95% d. about 68% e. at least 8/9 f. at Icast 3/4
The proportion of mortgage payments between $700 and $3100 is 99.7%
What is an equation?An equation is an expression that contains numbers and variables linked together by mathematical operations of addition, subtraction, multiplication, division and exponents. An equation can either be linear, quadratic, cubic, depending of the degree of the variable.
The z score is used for a normal distribution to determine by how many standard deviations the raw score is above or below the mean. It is given by:
z = (raw score - mean) / standard deviation
Given that mean = $1900, standard deviation = $400. Hence:
For 700:
z = (700 - 1900)/400 = -3
For 3100:
z = (3100 - 1900) / 400 = 3
P(700 < x < 3100) = P(3 < z < 3) = P(z < 3) - P(z < -3) = 0.9987 - 0.0134 = 0.997 = 99.7%
99.7% of the mortgage payments are between $700 and $3100
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Simplify each expression.
-15/-5- 36/-12 + -12/-4
The simplified expression is 9. To simplify the expression -15/-5 - 36/-12 + -12/-4, we can start by simplifying each individual fraction. -15/-5 simplifies to 3, 36/-12 simplifies to -3, and -12/-4 simplifies to 3.
Let's simplify each fraction individually:
-15/-5 = 3 (When dividing negative numbers, the negative signs cancel out.)
36/-12 = -3 (Dividing 36 by -12 gives us -3.)
-12/-4 = 3 (Dividing -12 by -4 gives us 3.)
Now, substituting these simplified fractions back into the original expression, we have:
3 - (-3) + 3
Since the negative sign before -3 is equivalent to adding a positive, we can simplify this to:
3 + 3 + 3
Adding the values together, we get:
9
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Use the graph of the function f to determine
How long will it take $3,000 to grow to $20,000 if it is invested at 4% compounded monthly? years (Round to the nearest tenth of a year.) If $8000 is invested at 8% compounded continuously, what is the amount 8 years?
If $8000 is invested at 8% compounded continuously, the amount 8 years is $12,904.95.
To find out how long it will take $3,000 to grow to $20,000 if it is invested at 4% compounded monthly, we can use the formula A=P(1+r/n)^(nt), where A is the final amount, P is the principal amount, r is the annual interest rate, n is the number of times interest is compounded per year, and t is the number of years. Plugging in the given values, we get:
20,000=3,000(1+0.04/12)^(12t)
Dividing both sides by 3,000, we get:
6.66667=(1+0.04/12)^(12t)
Taking the natural logarithm of both sides, we get:
ln(6.66667)=12t*ln(1+0.04/12)
Solving for t, we get:
t=ln(6.66667)/(12*ln(1+0.04/12))
t=41.2 years
So it will take approximately 41.2 years for $3,000 to grow to $20,000 if it is invested at 4% compounded monthly.
To find out the amount of $8,000 invested at 8% compounded continuously for 8 years, we can use the formula A=Pe^(rt), where A is the final amount, P is the principal amount, r is the annual interest rate, and t is the number of years. Plugging in the given values, we get:
A=8,000e^⁰ ⁶⁴
A=12,904.95
So the amount of $8,000 invested at 8% compounded continuously for 8 years is $12,904.95.
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