Question 1

you perform a t-test to determine whether dexterity is greater in adults vs. children, on average. This is an example of a ________-tailed test.

Group of answer choices

One

Two

Question 2

You are trying to determine whether grip strength (in Newtons) differs between adults and children and collect samples of size n=40 of each from a population. You perform Shapiro-Wilk tests (adults, p=0.067; children, p=0.032) and a Levene's test (p=0.084) on your data. You should analyze your data using __________.

Group of answer choices

an uncorrected independent-samples T test

a Welch-corrected independent-samples T test

a Mann-Whitney U test

none of the above

Question 3

You are trying to determine whether grip strength (in Newtons) differs between adults and children and collect samples of size n=10 of each from a population. You perform Shapiro-Wilk tests (adults, p=0.067; children, p=0.032) and a Levene's test (p=0.024) on your data. You should analyze your data using __________.

Group of answer choices

an uncorrected independent-samples T test

a Welch-corrected independent-samples T test

a Mann-Whitney U test

none of the above

Question 4

You perform a Mann-Whitney U test to compare body weight in samples of men and women, and the resulting p-value is p=0.443. You __________ the null hypothesis and state that the two groups _________ different.

Group of answer choices

reject; are

fail to reject; are

reject; are not

fail to reject; are not

Question 5

You perform an independent samples T test to compare income in Nashville and Memphis, and the resulting p-value is p=0.103. You __________ the null hypothesis and state that the two groups _________ different.

Group of answer choices

reject; are

fail to reject; are

reject; are not

fail to reject; are not