Question 2 (iii) 1500 families with 2 children were selected randomly, and the following data were recorded: Numberofgirlsinafamily210Numberoffamilies475814211 Compute the probability of a family, chosen at random, having no girl
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Solution
Total number of families = 475 +814 + 211= 1500 (iii) Number of families having no girl= 211 P3(arandomlychosenfamilyhasnogirl)=NumberfamilieshavingnogirlTotalnumberoffamilies P3(arandomlychosenfamilyhasnogirl)=2111500