help with Statistics

Using alpha = .05, what is your decision if the p-value is 0.04 for a one-tail test?

Reject the null hypothesis

Fail to reject the null hypothesis

Question 2

The T statistic determines the equal variance version of the t-test by dividing one variance by the other variance.

True

False

Question 3

When interpreting the effect size, a high effect is shown by a value equal to or greater than”.

8

0.2

1/2

0.8

Question 4

Using alpha = .05, what is your decision if the p-value is 0.04 for a two-tail test?

Reject the null hypothesis

Fail to reject the null hypothesis

Question 5

What is the alternate hypothesis in a problem where sales group two is predicted to be “…significantly less productive than sales group one?”

HA: μ1 ≠ μ2

HA: μ 1= μ 2

HA: μ 1> μ2

HA: μ 1< μ

Question 6

What is the advantage of a one-tailed test over a two-tailed test?

Less data variability in the groups involved.

Smaller critical values indicate significance

Rejecting at HO = .05 involves less chance of error.

There are fewer calculations to make.

Question 7

In a one-tail test, which of the following statements is true?

We use alpha/2 as the comparison with our p-value

We use the entire value of alpha as the comparison with our p-value

We don’t care if one variable is bigger or smaller than the other

We test for equality

Question 8

If the F statistic is greater than 1.0, the rejection region is in the left tail: if the value is less than 1.0, the rejection region is in the right tail

True

False

Question 9

To find the normal curve probability of exceeding a specific z-score, which Excel function could be used?

=1-NORM.S.DIST

=LARGE

=ROUND

= STANDARDIZE

Question 10

The desired sample size depends only the size of the population to be tested.

True

False