# Assume that adults have iq scores that are normally

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6.Assume that adults have IQ scores that are normally distributed with a mean of Mu=100 and a standard dev of =15. Find the probability that a randomly selected adult has an IQ less than 130.
7.In a study of pregnant women and their ability to correctly predict the sex of their baby, 58 of the pregnant women had 12 years of education or less, and 37.9% of them correctly
predicted the sex of their baby. Use a .05 significance level to test the claim that these women have no ability to predict the sex of their baby, and the results are not significantly different from those that would be expected with random guesses. Identify the null hypothesis, alternative hypothesis, test statistic, P-Value, conclusion about the null hypothesis, and the final conclusion that addresses the original claim. Use the P-Value method. Use the normal distribution as an approximation of the binomial distribution.