Answers

2014-04-26T22:58:03+05:30
 The confidence interval is: (p∗zα2p∗⋅(1−p∗)n−−−−−−−−−−,p∗+zα2p∗⋅(1−p∗)n−−−−−−−−−−). Here p∗=200/700=0.286, 1−p∗=0.714, n=700, zα2=1.96. So C.I=(0.253,0.319
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