Question: 1. When we revisited Case Study 6.4 in Chapter 21, we learned that a 95% confidence interval for the difference in years of education for

1. When we revisited Case Study 6.4 in Chapter 21, we learned that a 95% confidence interval for the difference in years of education for mothers who did not smoke compared with those who did extended from 0.15 to 1.19 years, with higher education for those who did not smoke. Suppose we had used the data to construct a test instead of a confidence interval, to see if one group in the population was more educated than the other. What would the null and alternative hypotheses have been for the test?

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