One hundred children were each asked whether they have brothers (B) and whether they have sisters (S).

Question:

One hundred children were each asked whether they have brothers (B) and whether they have sisters (S). Their responses are given in the Venn diagram opposite.

Find the probability that a randomly selected child has:

a. Sisters, given that they have brothers

b. Brothers, given that they do not have sisters

c. Sisters or brothers, given that they do not have both.

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Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

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One hundred children were each asked whether they have brothers (B) and whether they have sisters (S).

Question:

100 B 16 48 24 12

Step by Step Answer:

We can create a twoway table to represent the given information B no B Total S 48 12 60 no S 16 24 4...View the full answer

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

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