In a test of the XSORT method of gender selection, 574 babies are born to couples trying
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In a test of the XSORT method of gender selection, 574 babies are born to couples trying to have baby girls, and 525 of those babies are girls (based on data from the Genetics & IVF Institute).
a. If the gender-selection method has no effect and boys and girls are equally likely, find the mean and standard deviation for the numbers of girls born in groups of 574.
b. Is the result of 525 girls unusual? Does it suggest that the gender-selection method appears to be effective?
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a Let us assume that the random variable X denotes that the numbe...View the full answer
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