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In general round z scores to 2 decimal places and probabilities to 4 decimal places...

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In general round z scores to 2 decimal places and probabilities to 4 decimal places 1 As part of a study of property values in Minneapolis an appraisal company chose a random sample of 40 apartment buildings and determined each building s age as of January last year The ages in years of the buildings are listed below 83 60 71 70 20 72 63 22 67 19 52 73 23 19 68 19 20 22 73 65 54 33 66 67 51 83 13 14 51 59 72 64 87 80 70 57 83 19 85 76 a Use your calculator functions to determine the sample mean and sample standard deviation Round each to two decimal places 3 pts b Use the results of a to construct a 99 confidence interval estimate of the mean age of apartment buildings in Minneapolis Round the margin of error and bounds to two decimal places 6 pts

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