In Exercise, refer to the sample data in Table, which is included with the Chapter Problem. Assume that one of the subjects included in Table is randomly selected.

YSORT Gender Selection MicroSort’s YSORT gender-selection technique is designed to increase the likelihood that a baby will be a boy. In updated results (as of this writing) from a test of MicroSort’s YSORT gender-selection technique, 291 births consisted of 239 baby boys and 52 baby girls (based on data from the Genetics & IVF Institute). Based on these results, what is the probability of a boy born to a couple using MicroSort’s YSORT method? Does it appear that the technique is effective in increasing the likelihood that a baby will be a boy?

Table Pre-Employment Drug Screening Results*

Answer

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Probability of a boy born to a couple is 239/291=0.821

Probability of a girl born to a couple is 52/291=0.179