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

Question

Question 1

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