In a survey of 1002 people, 70% said they voted in a recent presidential election. Answer the following questions by han

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answerhappygod
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In a survey of 1002 people, 70% said they voted in a recent presidential election. Answer the following questions by han

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In a survey of 1002 people, 70% said they voted in a recent presidential election. Answer the following questions by hand.
a) 1002 people, how many of them said that they voted?
b) Use formula to construct a 82% confidence interval estimate of the proportion of the people who say that they voted.
c) Use Brock calculator to construct a 97% confidence interval estimate of the proportion of the people who say that they voted.
d) As the level of confidence increases what happens to the width of the confidence interval?
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