A researcher is interested in determining the effects of parents marital status

Question

A researcher is interested in determining the effects of parents marital status on female high school seniors on GPA. By simple random sampling procedures, she obtains the GPA of 100 female high school seniors who have parents that are married (mean=3.2) and compare them to the GPA of 100 female high school students who have divorced parents (mean=3.0) Select the appropriate statistical test to evaluate whether or not female high school seniors with divorced parents have lower grades than nose with married parents or if the observed difference is likely to be due to chance variation. Select from the following.
A. the one sample Z test 
B. the two sample Z test 
C. the t-test 
D. the x2 test with a null hypothesis that tells you the contents of the box (goodness of fit)
E. the x2 test for independence 
F. correlation 
G. regression 
H. none of above

Explanation / Answer

Since the sample size is large, we use the two sample Z test

Answer: Option B) is correct.

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