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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The U.S.Senate has 100 members.62 senators' offices obtained certain information from the individuals responsible for managing correspondence.Of these,40 specified a minimum number of letters that must be received on an issue before a form letter in response is created.
-Assume these observations constitute a random sample from the population,and find a 90% confidence interval for the proportion of all senators' offices with this policy.

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= x / n = 40 / 62 = 0.6452 blured image
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