(a) Holding all other values constant, increasing the sample size increases the power of a hypothesis...

(a) Holding all other values constant, increasing the sample size increases the power of a hypothesis test. (True/False)

(b) If a 95% confidence interval (CI) for μ is (52, 58), then 95% of the population values are between 52 and 58. (True/False)

(c) If the population distribution (X dist.) is normal, then the sampling distribution of X̅ is normal for a random sample of
any size. (True/False)

(d) A 95% confidence interval for μ was computed to be (30, 35). The margin of error equals 5. (True/False)

(e) If the null hypothesis is not rejected, there is strong evidence that the null hypothesis is true. (True/False)

(f) Holding all other values constant, decreasing alpha (α) increases the power of a hypothesis test. (True/False)

(g)If samples are selected from the same population, the quantities X̅ and S will vary from sample to sample. (True/False)

Solutions

Expert Solution

(a) Holding all other values constant, increasing the sample size increases the power of a hypothesis test.

TRUE

(b) If a 95% confidence interval (CI) for μ is (52, 58), then 95% of the population values are between 52 and 58.

TRUE

(c) If the population distribution (X dist.) is normal, then the sampling distribution of X̅ is normal for a random sample of
any size.

FALSE

This holds for sample size > 30

(d) A 95% confidence interval for μ was computed to be (30, 35). The margin of error equals 5.

FALSE

The margin of error is 5/2 = 2.5

(e) If the null hypothesis is not rejected, there is strong evidence that the null hypothesis is true.

FALSE

If the null hypothesis is not rejected, there is strong evidence that the null hypothesis is false

(f) Holding all other values constant, decreasing alpha (α) increases the power of a hypothesis test.

FALSE

(f) Holding all other values constant, decreasing alpha (α) decreases the power of a hypothesis test.

(g)If samples are selected from the same population, the quantities X̅ and S will vary from sample to sample.

TRUE

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Holding other factors in the Gordon model constant, if the market risk premium increases, the expected...

Holding other factors in the Gordon model constant, if the market risk premium increases, the expected price of the stock would fall." True or false?

holding other things constant if a country working age population decreases and its wetlth increases the...

holding other things constant if a country working age population decreases and its wetlth increases the labor supply cureve 1. shifts to the left If the effect of the change in wealth is bigger than the effect of the change in the working age population 2. shifts to the right if the effect of the change in wealth in magnitude is bigger Than the effect of the change in the working age population 3. shifts to left 4. shifts to...

"Holding other factors constant, a lower financial leverage increases the beta of the common stock." True...

"Holding other factors constant, a lower financial leverage increases the beta of the common stock." True or false?

(1 point) Holding everything else constant, which change to the sample size will reduce the width...

(1 point) Holding everything else constant, which change to the sample size will reduce the width of a confidence interval for a population mean by half? A. Raise the sample size to the power 4. B. Double the sample size. C. Square the sample size. D. Quadruple the sample size. E. Half the sample size. Select True or False from each pull-down menu, depending on whether the corresponding statement is true or false. ? True False 1. We say that two samples...

Part a) When performing a hypothesis test, what effect does increasing the sample size have on...

Part a) When performing a hypothesis test, what effect does increasing the sample size have on the probability of type 1 error? Why? Part b) when performing a hypothesis test, what effect does increasing the sample size have on the power? Why?

Defining anything over 30 as a large sample size is not an absolute. Other values for...

Defining anything over 30 as a large sample size is not an absolute. Other values for large samples can be selected based on the needs of collecting a particular data set. Using Excel, find the value of the 99.5% confidence interval for a single sample using both the z variable and the student’s t-distribution where the mean is 25.0 with a standard deviation of 2.5. When calculating the confidence interval for the z-value, assume any value of n is a...

Assume that employment decreases by 3%. Holding all other factors constant, we know with certainty that...

Assume that employment decreases by 3%. Holding all other factors constant, we know with certainty that in Solow model without technological progress, which of the following will occur? A none of the other answers is correct B output will decrease by 3% C output per capita will decrease by 3% D output will decrease by less than 3% 2.The existence of the J-curve suggests that a real depreciation will cause: A a final increase in net exports. B ambiguous effects...

Define power. How are sample size and power related? How are effect size and power related?

Is the standard deviation affected by a sample size increasing?

1. When sales price increases and all other variables are held constant, the break-even point will...

1. When sales price increases and all other variables are held constant, the break-even point will ____________________. a. increase b. decrease c. remain unchanged d. produce a lower contribution margin 2. When variable costs increase and all other variables remain unchanged, the break-even point will ___________________. a. decrease b. remain unchanged c. increase d. produce a lower contribution margin 3. When fixed costs increase and all other variables remain unchanged, the contribution margin will ___________________. a. increase b. increase variable...

Subjects