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Days of absences than the female sample

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Reference no: EM131066188

For boys, the average number of absences in the first grade is 15 with a standard deviation of 7; for girls, the average number of absences is 10 with a standard deviation of 6.

In a nationwide survey, suppose 100 boys and 50 girls are sampled. What is the probability that the male sample will have at most three more days of absences than the female sample?

(A) 0.025

(B) 0.035

(C) 0.045

(D) 0.055

(E) None of the above

Reference no: EM131066188

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