Answer to Question #120476 in Statistics and Probability for Joseph Se

Question

We would like to test if students who are in the social sciences, natural sciences, arts \& humanities, and other fields spend the same amount of time studying for this course. What type of test should we use?

A. t-test for two independent groups
B. z-test
C. t-test for two dependent groups
D. F-test (ANOVA)

Which of the following is not a condition required for comparing means across multiple groups using ANOVA?

A. The observations should be independent within and across groups.
B. The variability across the groups should be about equal.
C. The data within each group should be nearly normal.
D. There should be at least 10 successes and 10 failures.

Answer 1

1. There are more than 2 groups to be compared hence an F test is more suitable

D. F-test (ANOVA)

2. The conditions necessary for ANOVA are

The observations should be independent within and across groups,

the variability across the groups should be about equal, the data within each group should be nearly normal. The incorrect one is

D. There should be at least 10 successes and 10 failures.