For a research study comparing the average problem-solving ability for 5-year-old,6-year old,and 7-year-old boys,the appropriate hypothesis test is
A)independent-measures t test.
B)repeated-measures t test.
C)single-factor analysis of variance.
D)chi-square test for independence.

Question

Quizplus · Accepted Answer

The appropriate hypothesis test for comparing the average problem-solving abilities of three different age groups is a single-factor analysis of variance (ANOVA). This test allows us to determine if there is a significant difference in the mean problem-solving abilities between the three different age groups. The independent-measures t test would only be appropriate if we were comparing problem-solving abilities between two different groups. The repeated-measures t test would only be appropriate if we were comparing the problem-solving abilities of the same group of children at different ages. The chi-square test for independence would only be appropriate if we were comparing categorical data.

For a Research Study Comparing the Average Problem-Solving Ability for 5-Year-Old,6-Year