A bank manager wants to know the mean amount of mortgage paid per month by homeowners in
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a. Find a 97% confidence interval for the mean amount of mortgage paid per month by all homeowners in this area.
b. Suppose the confidence interval obtained in part a is too wide. How can the width of this interval be reduced? Discuss all possible alternatives. Which alternative is the best?
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a n 120 1575 215 and n 215 120 1962672498 The 97 confidence interval for is z 1...View the full answer
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