(Answered) A recent study of 280 people showed that between about 70

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A recent study of 280 people showed that between about 70 and 80 percent of Americans over 60 do not have enough savings to retire.

A) What is the sample proportion in decimal form?

B) Find the margin of error in decimal form

C) What is the number of people in the survey who do not have enough to retire?

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