In 2009, a reproductive clinic reported 43 live births to 165 women under the age of 38, but only 9 live births for 88 clients aged 38 and older. Is there evidence of a difference in the effectiveness of the clinic's methods for older women? Complete parts a through c. Use a = 0.01. Click here to view page 1 of the table. Click here to view page 2 of the table. a) Was this an experiment? Explain. This was not an experiment because each individual in the study was placed in a group based on observation. b) Test an appropriate hypothesis and state your conclusion in context. Write the hypotheses. He: The proportion of live births for women under the age of 38 is the same as the proportion for women aged 38 and older; that is, P1 - P2 = 0, where p, is the population proportion of live births for women under the age of 38, and p2 is the population proportion of live births for women ages 38 and older. HA: The proportion of live births for women under the age of 38 is different from the proportion for women aged 38 and older; that is, P1 - P2 # 0, where p, is the population proportion of live births for women under the age of 38, and p2 is the population proportion of live births for women ages 38 and older. The test statistic is z= 2.97. (Round to two decimal places as needed.) The P-value is 003 (Round to three decimal places as needed.) Write your conclusion. Reject Ho- The data provide sufficient evidence to conclude that the proportion of live births for women under age 38 is different from the proportion for women aged 38 and older. c) If you concluded there was a difference, estimate that difference with a confidence interval and interpret your interval in context. A. There is 99% confidence that the proportion of successful live births at the clinic is between and greater for mothers under the age of 38. (Round to three decimal places as needed.) O B. The conclusion was that there was no difference. Click to select and enter your answer(s) and then click Check Answer. All parts showing Clear All Check Answer MacBook Air