In 1995 a national vital statistics report indicated that about 2.7% of all births produced twins. Is the rate of twin births the same among very young​ mothers? Data from a large city hospital found only 9 sets of twins were born to 560 teenage girls. Test an appropriate hypothesis and state your conclusion. Be sure the appropriate assumptions and conditions are satisfied before you proceed. Are the assumptions and the conditions to perform a​ one-proportion z-test​ met?   Yes or No Part 2 State the null and alternative hypotheses. Choose the correct answer below.     A. H0​: p=0.027 HA​: p>0.027   B. H0​: p=0.027 HA​: p≠0.027   C. H0​: p=0.027 HA​: p<0.027   D. The assumptions and conditions are not​ met, so the test cannot proceed. Part 3 Determine the​ z-test statistic. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice.     A. z=enter your response here ​(Round to two decimal places as​ needed.) OR B. The assumptions and conditions are not​ met, so the test cannot proceed.

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