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Mathematics, 24.03.2020 19:11 ShawnaLove4808
A marketing consultant observed 50 consecutive shoppers at a supermarket. One variable of interest was how much each shopper spent in the store. Here are the data (in dollars), arranged in increasing order.
5.24 11.97 13.59 15.52 15.69 19.96 20.54 22.59 27.25 27.29
28.25 30.00 31.63 33.01 37.21 40.36 40.90 42.83 45.66 46.67
47.49 49.32 50.12 51.71 52.21 53.57 56.16 56.36 56.88 58.65
59.42 60.20 60.48 62.23 62.50 67.95 70.45 73.08 74.15 74.48
74.78 75.75 76.27 76.47 78.92 84.09 84.91 85.06 88.45 88.91
a. What is the mean amount a customer spends at the grocery store?
b. Assume that the standard deviation is $20.00. Find a 95% confidence interval for the mean amount spent by shoppers in similar circumstances.
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A marketing consultant observed 50 consecutive shoppers at a supermarket. One variable of interest w...
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