Question: A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 290 290 babies wereborn, and 261 261

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 290

290 babies wereborn, and 261

261 of them were girls. Use the sample data to construct a 99

99% confidence interval estimate of the percentage of girls born. Based on theresult, does the method appear to beeffective?

less than

__ < pless than

< __

Does the method appear to beeffective?

a. Yes, the proportion of girls is

is significantly different from 0.5.

b. No, the proportion of girls is not

isnot significantly different from 0.5.

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