Mathematics

7 May, 11:01

Find the probability that in a family of 4 children there will be

a. at least 1 boy

b. at least 1 boy and at least 1 girl

c. out of 2000 families with 4 children each how many would you expect to have 1 or 2 girls. assume that the probability of a male birth is 1/2.

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