# Question

Repeat the previous exercise using x = number of daughters the woman had, for which the slope estimate was 0.44 (se = 0.29).

Previous exercise

a. Interpret the sign of the slope. Is the effect of having more boys good, or bad?

b. Show all steps of the test of the hypothesis that life length is independent of number of sons, for the two-sided alternative hypothesis. Interpret the P-value.

c. Construct a 95% confidence interval for the true slope. Interpret. Is it plausible that the effect is relatively weak, with true slope near 0?

Previous exercise

a. Interpret the sign of the slope. Is the effect of having more boys good, or bad?

b. Show all steps of the test of the hypothesis that life length is independent of number of sons, for the two-sided alternative hypothesis. Interpret the P-value.

c. Construct a 95% confidence interval for the true slope. Interpret. Is it plausible that the effect is relatively weak, with true slope near 0?

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