21. Pregnancy. In 1998, a San Diego reproductive clinic

Chapter 22, Problem 21

(choose chapter or problem)

21. Pregnancy. In 1998, a San Diego reproductive clinic reported42 live births to 157 women under the age of 38,but only 7 live births for 89 clients aged 38 and older. Isthis strong evidence of a difference in the effectiveness ofthe clinics methods for older women?a) Was this an experiment? Explain.b) Test an appropriate hypothesis and state your conclusionin context.c) If you concluded there was a difference, estimate thatdifference with a confidence interval and interpretyour interval in context.

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