In a test of the YSORT method of gender selection, 152 babies are born to couples trying
Question:
In a test of the YSORT method of gender selection, 152 babies are born to couples trying to have baby boys, and 127 of those babies are boys (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 boys born in groups of 152.
b. Is the result of 127 boys 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 numbers ...View the full answer
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