An opinion poll was taken before an election. The table shows the percentage of voters who said
Question:
An opinion poll was taken before an election. The table shows the percentage of voters who said they would vote for parties A, B and C.
ind an approximation for the probability that, in a random sample of 120 of these voters:
a. Exactly 50 said they would vote for party B
b. More than 70 but fewer than 90 said they would vote for party B or party C.
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Taking a random sample of 120 of these voters So n120 Let random variable X ...View the full answer
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Related Book For 
Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook
ISBN: 9781108407304
1st Edition
Authors: Dean Chalmers, Julian Gilbey
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