Question

Asked Apr 27, 2019

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In a survey of 1048 people, 729 people said they voted in a recent presidential election. Voting records show that 67 % of eligible voters actually did vote. Given that 67 % of eligible voters actually did vote, (a) find the probability that among 1048 randomly selected voters, at least 729 actually did vote. (b) What do the results from part (a) suggest?

Step 1

Given proportion of eligible voters did vote = p = 0.67.

In a survey of 1048 people 729 people said they voted. Proportion of people voted in sample of 1048 = 729/1048 = 0.6956.

Let p be a distribution which represents the proportion of people voted. In given sample with size 1048, it is large enough that np and n(1-p) are greater than 10. So, we can assume that it fo...

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