03/21/22

This is a Statistics problem based on confidence

An Orlando radio station is interested in knowing the percentage of their listeners who attend their Summer Concert Series. How many listeners would the radio station need to sample to determine... more
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03/16/22

A random sample of size 50 is taken from a large population with mean μ=160 and standard deviation σ=18.

A random sample of size 50 is taken from a large population with mean μ=160 and standard deviation σ=18. What is the mean of the sampling distribution of the sample means? What is the standard... more
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02/23/22

Computing a Margin of Error: Confidence Interval for a Population Mean
You measure 49 dogs' weights, and find they have a mean weight of 30 ounces. Assume the population standard deviation is 12.2 ounces.Based on this, what is the margin of error associated with a 90%... more
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02/10/22

Two fair, six-sided dice are rolled. What is the probability that one die shows a 1 and the other die shows a 6?
Two fair, six-sided dice are rolled. What is the probability that one die shows a 1 and the other die shows a 6?
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02/09/22

What is an equation of the line that passes through the points (-4, -1) and (2, 8)?
Please help me. I can't understand this
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02/04/22

Find the gauge pressure (in psi) at the bottom of a freshwater swimming pool that is 15.5 ft deep.
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01/10/22

What even is a slope?
I imagine slope as the steepness of a line which means that it should probably tell us an angle which the line makes with the positive x axis .But we get a number .WTH does that even mean? What am... more
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12/13/21

Which of the following is equivalent formula to r = d/t
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12/04/21

What is the formula for calculating this?
X follows a beta distribution with parameters alpha=5 and beta=2. What is V(X)?
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12/01/21

Find the least squares regression line

Find the least squares regression line for the given points. (-2,-2), (-1,-1), (0,0), (1,3), (2,3)
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11/21/21

Take the Laplace transform of the IVP
-4 dy/dt - y = 0 y(0) = -8I need to use Y for laplace transform of y( ) = Y{0}So Y = ( ) / (s - )I found that y(t) = -8e^(-t/4)
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11/17/21

If the base is 10 then the given logarithm is a natural logarithm.

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11/11/21

Find the area of the region under the curve y=7-4x^2 and above the x-axis
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11/09/21

Calculate the force needed.
A cement lorry with a mass of 15000kg takes 25s to accelerate from 5.0ms-1 to 22ms-1. Calculate the force needed to do his.
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11/06/21

Logarithm equations
Solve log base 3(2x +5)-log base 4 x =3
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11/03/21

Dynamic Fluids.
A small ball of radius 8.7 mm and mass 3.15 g falls at terminal velocity through a fluid with a density of 869 kg/m3 and viscosity of 0.075 Pa·s. What is the ball's speed? Unsure as to what... more
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11/03/21

Express the confidence interval 30.9 % ± 7.7 % in interval form.
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11/02/21

AP CHEMISTRY GAS LAWS
If 3.21 Moles of ammonia gas occupy 5.22 L at 50 degrees C, calculate the pressure of the gas using the ideal gas equation and by using the van der Waals equation. Compare each value to the actual... more
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10/28/21

heat engines thermodynamics
What is the entropy change of a gas in J/K (to 2 decimal points) when one mole of a perfect gas reversibly expands from 0.36 m3 to 2.42 m3?
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10/24/21

Maxima and Minima
Let f(x) = e2x-4x^2-7 The derivative of f is f'(x) = _________An equation for the tangent line to the curve y = f(x) at x = 0 is y = ____________
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10/19/21

Mean Value Theorem
Consider the function f(x)=1/x on the interval [3,12]. Find the average or mean slope of the function on this interval.  By the Mean Value Theorem, we know there exists a c in the open... more
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10/18/21

Find the area under the standard normal curve which lies

A. to the left of 0.47  b) to the right of z = -0.06  ( c) to the right of z = 2.53d) to the left of z = -1.31  (e) between z = 0.72 and z = 1.59  (f) between z = -0.11 and z = 2.48
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10/18/21

Let y=tan(5x+8).Find the differential dy when x=4 and dx=0.1   Find the differential dy when x=4 and dx=0.2
Let y=tan(5x+8).Find the differential dy when x=4 and dx=0.1   Find the differential dy when x=4 and dx=0.2
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10/18/21

Find the smallest number n of terms needed to obtain an approximation of the series ∞∑ k=1 24ke^(−0.01k)^(2) accurate to 10^−6
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10/11/21

Consider the following equation. 3x^4 − 8x^3 + 9 = 0, [2, 3]

(b) Use Newton's method to approximate the root correct to six decimal places. 
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