Question
In a study of pregnant women and their ability to correctly predict the sex of theirbaby, 56 of the pregnant women had 12 years of
In a study of pregnant women and their ability to correctly predict the sex of theirbaby, 56
of the pregnant women had 12 years of education orless, and
42.9% of these women correctly predicted the sex of their baby. Use a
0.05 significance level to test the claim that these women have an ability to predict the sex of their baby equivalent to random guesses. Identify the nullhypothesis, alternativehypothesis, teststatistic, P-value, and conclusion about the null hypothesis. Use theP-value method. Use the normal distribution as an approximation of the binomial distribution. Do the results suggest that their percentage of correct predictions is different from results expected with randomguesses?
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