Mathematics, 14.10.2020 01:01 capricorn0115
A bank manager wants to know the mean amount of mortgage paid per month by homeowners in an area. A random sample of homeowners selected from this area showed that they pay an average of per month for their mortgages. The population standard deviation of such mortgages is . a. Find a confidence interval for the mean amount of mortgage paid per month by all homeowners in this area. Round your answers to two decimal places. 1538.51 to 1627.49 dollars b. Suppose the confidence interval obtained in part a is too wide. Select all of the ways the width of this interval can be reduced.
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Mathematics, 21.06.2019 20:00
Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.
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A bank manager wants to know the mean amount of mortgage paid per month by homeowners in an area. A...