Final answer:
The subject of this question is Social Studies. The question asks how to conduct a hypothesis test to determine if the mean difference in satisfaction levels between husbands and wives in dual-career couples is negative.
Step-by-step explanation:
The subject of this question is Social Studies. The question is asking about conducting a hypothesis test to determine if the mean difference in satisfaction levels between husbands and wives in dual-career couples is negative.
To conduct a hypothesis test, we can use a paired t-test. First, we calculate the differences between each husband-wife pair. Then, we test whether the mean difference is significantly less than 0 using the t-test.
We compare the calculated t-value with the critical t-value at a chosen significance level (usually 0.05) to determine if there is enough evidence to reject the null hypothesis that the mean difference is 0.
For example, if the calculated t-value is -2.5 and the critical t-value at 0.05 significance level is -2.042, we would have enough evidence to reject the null hypothesis and conclude that the mean difference in satisfaction levels is indeed negative.