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On a given Sunday, 25 children were born at a maternity ward. (a) On an average,...

On a given Sunday, 25 children were born at a maternity ward.

(a) On an average, out of these children, how many girls are expected?

(b) What is the standard deviation in the number of girls?

(c) What would be the usual range for the number of girls?

(d) Given the above, would 17 girls be unusually high?

(e) What is the probability that at least 15 of the children are girls?

[HINT: Binomial distributio

Math   Statistics-And-Probability   
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