In 1996, a reproductive clinic reported 41 live births to 162 women under the age of 38, but only 6 live births for 76 clients aged 38 and older. Is there evidence of a difference in the effectiveness of the clinic's methods for older women?
a) Test an appropriate hypothesis and state your conclusion. (Use the pooled sample proportion when checking the success/failure condition.) (Round to two decimal places as needed.)
Z =
P =
b) If you concluded there was a difference, estimate that difference with a 99% confidence interval and interpret your interval in context.
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