# STATS 10 True/ False Questions Assignment

Question

Question 1

When performing a test of hypothesis at the .05 level of significance, if the p-value is determined to be .04

you will reject the null hypothesis.

True

False

Question 2

If the p-value for the slope in a linear regression is less than the level of significance, it means that the slope is not zero.

True

False

Question 3

If household income is normally distributed with a mean of $50,000 and a standard deviation of 10,000, the following

equation will give you the probability of randomly selecting a household with a income of more than $40,000.

1- normsdist(-1)

True

False

Question 4

When constructing 90% confidence interval for the one-sample mean (with the population standard deviation known)

the z value is approximately (plus or minus) 1.645.

True

False

Question 5

Suppose a non-normal population has a standard deviation of ten. If you take a sample of four observations, the

standard error would be 2.5.

True

False

Question 6

If you construct a 95% confidence interval, there is a 95% chance that the interval will contain the sample mean.

True

False

Question 7

Suppose that a normally distributed population has a mean of 12. The probability of randomly selecting a value of 11 or

higher is less than .50.

True

False

Question 8

As you quadruple the sample size (e.g., go from a sample size of 25 to 100) you cut the standard error in half.

True

False

Question 9

Suppose you are testing the following hypotheses at the .05 level of significance.

Ho: mu >=100

Ha: mu < 100

If your p-value is .75, it would be correct to claim that mu is at least 100.

True

False

Question 10

In multiple regression, if you can prove the slope is not equal to zero, then you can claim that there is a relationship

between the two variables.

True

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