We test if the average number of hours studied for college freshman is different from the average

We test if the average number of hours studied for college freshman is different from the average number of hours studied for seniors in college. 

A) 1 Proportion Test 

B) 1 mean test with a one-sided alternative 

C) 1 mean test with a two-sided alternative 

D) Two-sample t-test with a one-sided alternative 

E) Two-sample t-test with a two-sided alternative 

F) Chi-square test 

G) One-Way ANOVA test 

H) Regression 

We survey a random sample of households in Philadelphia to test if less than 50% of families are families where both parents are working full time. 

A) T-test about a mean with a one-sided alternative 

B) T-test about a mean with a two-sided alternative 

C) Chi-square test of independence 

D) Z-test about a proportion with a one-sided alternative 

E) Z-test about a proportion with a two-sided alternative 

F) One-way Analysis of Variance (ANOVA) 

G) Regression 

Select the most appropriate statistical test for each of the following:

A researcher wants to compare the testosterone levels among athletes in four sports: soccer, track, Lacrosse, and water polo. A sample is drawn in the following manner with total sample size was n =30 (10 soccer, 10 track, 5 Lacrosse, and 5 water polo). 

A) 1 Proportion Test 

B) 1 mean test with a one-sided alternative 

C) 1 mean test with a two-sided alternative 

D) Two-sample t-test with a one-sided alternative 

E) Two-sample t-test with a two-sided alternative 

F) Chi-square test 

G) One-Way ANOVA test

H) Regression

Select the proper NULL hypothesis: 

A class survey is used to compare the GPAs of male and female students. 

A) H0:p1 - p2 = 0 

B) H0:p-hat1 - p-hat2 = 0 

C) H0:μ1 - μ2 = 0 

D) H0:x-bar1 - x-bar2 = 0 

Select the proper NULL hypothesis:

A class survey is used to compare the beliefs in love at first sight for males and females. 

A) H0:p1 - p2 = 0 

B) H0:p-hat1 - p-hat2 = 0 

C) H0:µ1 - µ2 = 0 

D) H0:x-bar1 - x-bar2 = 0 

Select the proper NULL hypothesis:

A study was conducted to see if there is a difference between blood pressures of husbands and their wives. 

A) H0:pd = 0 

B) H0:p-hat1 - p-hat2 = 0 

C) H0:µd = 0 

D) H0:x-bar1 - x-bar2 = 0 

Identify whether the comparison is based on two independent samples or paired data:

Students are asked whether they have ever missed class as a result of drinking alcohol. Results for fraternity and sorority members are compared to results for non-Greeks. 

A) Independent 

B) Paired