A researcher is interested in investigating the differences between men and wome

Question

A researcher is interested in investigating the differences between men and women with respect to the age at which a person’s first child is born. Using the General Social Survey (GSS) the researcher has calculated the following statistics using Excel for the age at which men (Group 1) and women (Group 2) reported their first child was born. Assume the population standard deviations are equal

The researcher wishes to test whether the true mean ages at which men and women have their first child are different, at the 0.05 level. Which of the following correctly expresses the null and alternative hypotheses?

Explanation / Answer

option (A) correctly tests if mean1 and mean2 are equal or not.

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