In 1991 a national vital statistics report indicated that about 3.8% of all births produced twins. Is the rate of twin births the same among very youngmothers? Data from a large city hospital found only 15 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.

(a) Are the assumptions and the conditions to perform aone-proportion z-testmet?

Yes or No

(b) Determine thez-test statistic.

(c) Find theP-value

(d) What is yourconclusion

reject or fail to reject ?