Determine the critical value t for a 85% confidence interval with df=15.
The critical value t is: _____
(Provide your answer with 3 decimal places - as given in t-table)
The critical value t for the given parameters is approximately 1.753.
To determine the critical value t for a 85% confidence interval with degrees of freedom (df) equal to 15, we can use a t-distribution table or a statistical software.
The critical value t depends on the desired confidence level and the degrees of freedom. In this case, with a confidence level of 85% and 15 degrees of freedom, we need to find the value from the t-distribution table.
Consulting a t-distribution table or using statistical software, the critical value t for a 85% confidence interval with 15 degrees of freedom is approximately 1.753 (rounded to three decimal places).
Therefore, the critical value t for the given parameters is approximately 1.753.
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Determine the critical value t for a 85% confidence interval with df=15.
The critical value t is: _____
(Provide your answer with 3 decimal places)
What is the part of line having 1 endpoint and extending in one direction?
A part of a line that has 1 endpoint and extends indefinitely in only one direction is called a ray.
A ray is named using its endpoint first, and then any other point on the ray
Properties of ray:
A line is a series of points placed together that continue infinitely.When this line is restricted from one direction and is extended in the other direction indefinitely, it forms a ray.It has just one starting point and does not have an opposite end and goes through and cuts many points and lines and is often used to draw angles, and we cannot measure the length of a ray.To know more about ray:
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What is the height of the cylinder? The figure is not drawn to scale.
V = 282.7 in²
18 in
11.3 in
7.2 in
3.6 in
The height of the cylinder is \(3 inch\)
How can the height of the cylinder be found?Based on the attached figure,
Volume of the cylinder = 282.7 square inches
Radius of the cylinder =5 inches.
The height of the cylinder = ?
The volume of the cylinder can be found with the formula as :
\(V=pi r^{2} h\)
\(h=\frac{V}{pi r^{2} } \\\\h = \frac{282.7}{3.142 * 5^{2} } \\\\=3 inch\)
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Which is the correct calculation for the volume of the prism??
3 units
5 units
4 units
O3+5+4=12 units
O 3(4) +5= 17 units
O 3(4) = 12 units
O 3(5)(4) = 60 units'
-2 divided -0.25
4 divided 0.5
Answer:
-2/-0.25=8
4/0.5=8
Step-by-step explanation:
both of their answers are 8
Write each equation in function notation. y=12+3/4x
Step-by-step explanation:
y = f(x)
this has the same meaning. y is just the variable for the functional result value. while x is usually used as variable for the input value.
so (I recommend to use the brackets to make sure that people understand it is meant that x gets multilevel by 3 in the numerator, and not by 4 in the denominator),
y = 12 + (3/4)x
is the same as
f(x) = 12 + (3/4)x
you could also write it as
f(x) = 12 + 3x/4
don't skip things, always think about the rules of the sequence of the operations in an expression, and how a reader could understand it. always be as precise, complete and consistent as possible.
repost of this math question due in 5 minutes plzz helpp
I just don’t know how to solve it
Answer:
1594
Step-by-step explanation:
A bigburger has 1/4 pound of meat. A super burger has 1/3 of meat. How much more meat is used for the super burger?
Answer:
1/12
Step-by-step explanation:
1
3
−
1
4
=
1
3
+
−1
4
=
4
12
+
−3
12
=
4+−3
12
=
1
12
The super burger uses \(\(1/12\)\) pound more meat than the big burger, with\(\(1/3\)\) and \(\(1/4\)\) pounds respectively.
You can divide the amount of meat in the big burger by the amount in the super burger to determine how much more meat is used for the super burger than the big burger.
Amount of meat in the big burger: 1/4 pound
Amount of meat in the super burger: 1/3 pound
Difference = Amount in super burger - Amount in big burger
Difference =\(\(1/3\) - \(1/4\)\)
To subtract these fractions, you need a common denominator. The least common multiple of 3 and 4 is 12.
Difference = \(\(\frac{4}{12}\) - \(\frac{3}{12}\)\)
Difference =\(\(\frac{1}{12}\)\)
So, the super burger uses \(\(1/12\)\) pound more meat than the big burger.
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x - 10+ 9x = - 1 + 10x
Answer:
the equation is falseStep-by-step explanation:
x - 10+ 9x = - 1 + 10x
-10 + 1 = -x - 9x + 10x
-9 = 0
the equation is false
Which is the equation of an ellipse with directrices at y = ±4 and foci at (0, 2) and (0, −2)? x squared over 16 minus y squared over 4 equals 1 x squared over 4 plus y squared over 16 equals 1 x squared over 8 minus y squared over 4 equals 1 x squared over 4 plus y squared over 8 equals 1
Answer:
x squared over 4 plus and squared over 8 equals 1, x^2/4 + y^2/8 = 1
Step-by-step explanation:
We have that the general ellipse equation is as follows:
x^2/a^2 + y^2/b^2 = 1
Furthermore, the foci is (0, c) and b> a we have to:
c ^ 2 = b ^ 2 - a ^ 2
However,
guideline x = + - b / e and foci (0, + - ab)
where is e is the eccentricity, therefore:
b / e = 4, then e = b / 4
and we also have b * e = 2, we replace:
b * (b / 4) = 2
b ^ 2 = 8
replacing:
2 ^ 2 = 8 - a ^ 2
a ^ 2 = 8 - 2 ^ 2
a ^ 2 = 8 - 4
a ^ 2 = 4
Therefore if we replace in the general equation it would be
x^2/4 + y^2/8 = 1
that is, x squared over 4 plus and squared over 8 equals 1
Answer:
x^2/4 + y^2/8 = 1
Step-by-step explanation:
Given _______________________________________________, there is one and only one line perpendicular to the plane through that point.
Answer:
through a given plane
Step-by-step explanation:
Identify the equation of a line perpendicular
to y=3/5x-6 and passing through (1,4)
in slope-intercept form
Answer:The equation of perpendicular line is
y
=
−
5
3
x
+
17
3
.
Explanation:
The slope of the line
y
=
3
5
x
−
6
is
m
1
=
3
5
[obtained by
comparing standard slope-intercept form of line with slope
m
;
y
=
m
x
+
c
] . We know the product of slopes of two
perpendicular lines is
−
1
, i.e
m
1
⋅
m
2
=
−
1
or
3
5
⋅
m
2
=
−
1
or
m
2
=
−
5
3
. Let the equation of perpendicular line in
slope - intercept form is
y
=
m
x
+
c
;
m
=
m
2
=
−
5
3
∴
y
=
−
5
3
x
+
c
. The line passes through point
(
1
,
4
)
, which
will satisfy the equation of line
∴
4
=
−
5
3
⋅
1
+
c
∴
c
=
4
+
5
3
or
c
=
17
3
Hence the equation of perpendicular line is
y
=
−
5
3
x
+
17
3
It costs $2.80 to make a sandwich at the local deli shop. To make a profit, the deli sells it at a price that is 170% of the cost. The sandwich sells for $___. (Make sure to enter the answer as a decimal number only. Do not enter special characters such as the dollar symbol.)
Answer:
$4.76
Step-by-step explanation:
It costs $2.80 to make a sandwich at the local deli shop and the deli sells it at a price that is 170% of the cost.
We have to find 170% of the cost of making each sandwich ($2.80):
170/100 * 2.80 = $4.76
The sandwich sells for $4.76
Answer:
ben
Step-by-step explanation:
You jog at a rate of 6 miles per hour. Your friend is 55 feet ahead of you and jogs at a rate of 6.6 feet per second. Write and solve an inequality that represents the amounts of time, t , that your friend is ahead of you.
The inequality expression is 8.8t < 55 + 6.6t and your friend will be ahead for at most 25 seconds
What are inequality expressions?Inequality expressions are mathematical statements that are represented by variables, coefficients and operators where the opposite sides are not equal
How to write and solve an inequality that represents the amounts of time your friend is ahead of you?The given parameters are
Your rate, r1 = 6 miles per hour
Your friend's rate, r2 = 6.6 feet per second
Distance apart = 55 feet
Convert your rate to feet per second, we have
Your rate, r1 = 6 * 1.47 feet per second
Evaluate
Your rate, r1 = 8.8 feet per second
To calculate the time that your friend is ahead of you, we use the following expression
r1 * t < distance apart + r2 * t
So, we have
8.8t < 55 + 6.6t
Collect the like terms
So, we have
8.8t - 6.6t < 55
Evaluate the like terms
So, we have
2.2t < 55
Divide both sides by 2.2
So, we have
t < 25
Hence, the inequality expression is 8.8t < 55 + 6.6t and your friend will be ahead for at most 25 seconds
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Compare the budgets of Hong Kong, United States of America, and
Korea based on your definition of a budget, in terms of contents,
formats, advantages, and disadvantages, etc.
The budgets of Hong Kong, the United States of America, and Korea differ in contents, formats, advantages, and disadvantages. While each budget has its strengths and weaknesses, they all aim to provide a clear and transparent financial plan for their respective countries.
A budget is a financial plan that estimates expected income and expenditure for a specific period. It may include income, expenses, debts, and savings. Budgets may vary from country to country and can be analyzed by comparing their contents, formats, advantages, and disadvantages. Here are the budgets of Hong Kong, the United States of America, and Korea:
Hong Kong Budget:United States Budget:
Contents: The US budget comprises revenue, expenditures, and deficit or surplus. It includes an analysis of taxes, social security, and Medicare.Format: The US budget is presented in a complex and lengthy format, including tables, graphs, and other financial documents.Advantages: The budget provides detailed information on tax expenditures and encourages public participation in the budget process.Disadvantages: The budget can be challenging to understand due to its complexity, and it may not provide an accurate depiction of federal spending.Korean Budget:
Contents: The Korean budget comprises revenue, expenditures, and surplus or deficit. It includes detailed information on taxes, social security, and public welfare.Format: The Korean budget is presented in a clear and concise format, including tables and charts to aid understanding.Advantages: The budget is easy to understand, and it promotes transparency and accountability. It also provides detailed information on social welfare expenditures.Disadvantages: The budget may not provide an accurate depiction of government spending, and it may not include information on hidden expenditures.Learn more about Budget:
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Write 5.24 as a mixed number in simplest form.
5.24 =
Step-by-step explanation:
5 +0.24 = 5 + 24 = 12 = 6
100 50 25
= 5 6
25
Find the area of this circle. Use 3.14 for piπ.
Answer:
A =452.16 ft^2
Step-by-step explanation:
The area of a circle is given by
A = pi r^2 where r is the radius
A = 3.14 (12)^2
A =452.16 ft^2
Answer:
452.16ft^2
Step-by-step explanation:
So to answer this You need to use the formula A=πR^2
Step one is Figuring out what the equation is so A= (3.14)12^2Now what is 12 squared? The answer is 144ftStep three Multiply 144 by 3.14 since that is for PI to get 452.16ft^2In a right triangle , the longest side is 8 cm. One of the remaining sides is 4 root 3 cm long . find the length of the other side .
Answer:
The length of other side = 4 cm
Step-by-step explanation:
Given :
longest side = H = 8 cm
one side = P = 4√3
The other side will be H² = P² + B²
=> 8² = (4√3)² + B ²
=> 64 = 48 + B²
=> 64 - 48 = B²
=> 16 = B²
=> √16 = B
=> B = 4
Let the lengths of sides be a, b and c (hypotenuse).
Hypotenuse is the longest side , So c = 8.
\(\sf{Let \: b = 4\sqrt{3}}\)
From the pythagoras theorem :
\(a^2 + b^2= c^2\)
\(a^2 + (4\sqrt{3})^2= 8^2\)
\(a^2 + 16 (3) = 64\)
\(a^2 +48=64\)
\(a^2 = 16\)
\(a = 16 / 2\)
\(a = 4\)
The third side is 4 cm.
A man mixes 90 litres of milk, containing 10% of water with 60 liters of milk containing 20% of water, then the percent of water in the minture is?
Answer:
it is 15 percent than
Step-by-step explanation:
hope i could help
Solve for x.
5x−2(x+1)=1/4
Answer: 3/4
Step-by-step explanation:
Let's start with what we know. We have:
5x - 2x - 2 = 1/4
We multiply everything by 4:
12x - 8 = 1
We add 8 to both sides:
12x = 9
We divide by 12:
x = 9/12
We simplify:
x = 3/4
let a be a 5 5 complex matrix with what are the possible characteristic and minimal polynomials? if a is not diagonalisable, how many possible jordan normal forms are there for a?
There are infinitely many possible Jordan normal forms for a non-diagonalizable 5x5 complex matrix.
How there are infinitely many possible Jordan normal forms for a non-diagonalizable 5x5 complex matrix?Given that A is a 5x5 complex matrix, the possible characteristic polynomial will have degree 5, and the minimal polynomial will divide the characteristic polynomial and have degree at most 5.
If A is not diagonalizable, then there will be at least one Jordan block in the Jordan normal form of A. The size of the largest Jordan block will be equal to the algebraic multiplicity of the corresponding eigenvalue. Since the characteristic polynomial has degree 5, there can be at most 5 Jordan blocks, and their sizes must sum to 5.
Therefore, the possible Jordan normal forms for A are:
A single 5x5 Jordan block
Two Jordan blocks, one of size 4 and one of size 1
Two Jordan blocks, one of size 3 and one of size 2
Three Jordan blocks, one of size 3 and two of size 1
Three Jordan blocks, one of size 2 and two of size 1
Four Jordan blocks, each of size 1
The minimal polynomial will be the product of linear factors corresponding to the distinct eigenvalues of A, and each factor will have multiplicity equal to the size of the largest Jordan block corresponding to that eigenvalue.
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Mindy and Troy combined ate 9 pieces of the wedding cake. Mindy ate 3 pieces of cake and Troy had \dfrac14
4
1
start fraction, 1, divided by, 4, end fraction of the total cake.
Answer:
Equation: 3 + 1/4c = 9
24 pieces of cake
Step-by-step explanation:
from khan :))
If i= square root of -1, what is the value of i^3
Answer:
\( - i\)
Step-by-step explanation:
Set up equation.
\(i {}^{3} = y\)
\( {i}^{2 } \times i = y\)
\( - 1 \times i = y\)
\( - i = y\)
(ANSWER ASAP) Solve the inequality.
Answer:
Step-by-step explanation:
k ≤ -3-8 subtract 8 from both sides
k ≤ -11
the solution is the area to the left of a vertical line trough the point x= -11 and includes thhe line
When an alternating current of frequency f and peak current I_0 passes through a resistance R, then the power delivered to the resistance at time t seconds is P = I^2_0 R sin^2 2 pi ft. Write an expression for the power in terms of csc^2 2 pi ft. P = I^2_0 R/(csc^2 2 pi ft) P = I^2_0 R (csc^2 2 pi ft) P = I^2_0/(1 - csc^2 2 pi ft) P = I^2_0 R(1 - csc^2 2 pi ft)
The expression for the power delivered to a resistance in terms of csc^2 2 pi ft is P = I^2_0 R (csc^2 2 pi ft).
According to the given information, the power delivered to a resistance R when an alternating current of frequency f and peak current I_0 passes through it is represented by the equation P = I^2_0 R sin^2 2 pi ft.
To express this equation in terms of csc^2 2 pi ft, we can use the trigonometric identity csc^2 x = 1/sin^2 x. Substituting this identity into the equation, we get P = I^2_0 R (1/sin^2 2 pi ft).
Since csc^2 x is the reciprocal of sin^2 x, we can rewrite the equation as P = I^2_0 R (csc^2 2 pi ft). This expression represents the power delivered to the resistance in terms of csc^2 2 pi ft.
Therefore, the correct expression for the power delivered to the resistance in terms of csc^2 2 pi ft is P = I^2_0 R (csc^2 2 pi ft).
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Voltage Divider Formula / Equation
The voltage divider formula is used to calculate the output voltage of a circuit that is divided into two parts.It is expressed as Vout=Vin*(R2/(R1+R2))
It is expressed as Vout=Vin*(R2/(R1+R2)), where Vout is the output voltage, Vin is the input voltage, R1 is the resistance of the first part, and R2 is the resistance of the second part. The voltage divider formula is based on Ohm's Law, which states that the voltage across a circuit is equal to the current multiplied by the resistance. When a voltage is divided across two parts, the voltage in each part is equal to the voltage of the circuit multiplied by the resistance of each part. To calculate the output voltage, multiply the input voltage by the resistance of the second part, then divide it by the sum of the resistances of both parts. For example, if the input voltage is 10V and the resistances of the two parts are 5 Ohms and 10 Ohms, the output voltage would be Vout=(10V)*(10Ω/(5Ω+10Ω))=6.67V.
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In the diagram below AB = BC and BCD = 110 find A with justification
Result:
A (is an angle) = 70°.
How to calculate angle A?Based on the provided information:
AB = BC
BCD = 110
We can use the information to find the value of A.
Since AB = BC, we can assume that triangle ABC is an isosceles triangle, where AB and BC are the two equal sides. For an isosceles triangle, the angles opposite to the equal sides are also equal.
So, ∠ABC = ∠BCA (opposite angles of an isosceles triangle are equal).
Since BCD = 110, we can deduce that ∠BCA + ∠ BCD = 180 (sum of angles in a triangle equals 180 degrees).
Substituting the values, we get:
∠BCA + 110 = 180
Subtracting 110 from both sides, we get:
∠BCA = 180 - 110
∠BCA = 70
Now, since ∠ABC = ∠BCA, we have:
∠ABC = 70°
Therefore, A = 70 degrees.
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consolidated builders has bid on two large construction projects. the company president believes that the probability of winning the first contract (event a) is 0.6, that the probability of winning the second (event b) is 0.5, and that the joint probability of winning both jobs (event {a and b}) is 0.4. what is the probability of the event {a or b} that consolidated will win at least one of the jobs?
The probability of an event {a or b} is 0.7
Probability: It is the branch of mathematics concerning numerical, descriptions of how likely an event is to occur or how likely it is that a proposition is true. the probability of an event is a number between
0 and 1.
if the two events a and b are mutually exclusive then the addition rule of probability is:
P( a or b) = P(a) + P(b) - P(a∩ b)
Given that,
P(a) = 0.6 P(b) = 0.5
P(a ∩ b)= 0.4
According to probability methods, if two events are mutually exclusive, then the probability of either occurring is denoted as P (a ∪ b).
Now, we know that,
P( a ∪ b) = P(a) + P(b) - P( a ∩ b)
= 0.6 + 0.5 - 0.4
= 0.7
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Mrs. Temps borrows $ 200 from Mrs. Abruzzino and is paying her back $ 20 every month. Describe the graph of a function that describes the amount Mrs. Temps owes Mrs. Abruzzino over time.
Answer:
The equation for this line would be y = -20x + 200. The y-intercept is 200 and represents the amount of money Mrs. Temps owes Mrs. Abruzzino in the beginning. The slope is -20 which represents how much Mrs. Temps pays back Mrs. Abruzzino each month. The x-axis should increase by 1 months.
Step-by-step explanation: