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Please show all work and do not use excel functions tor find answers. 1. A sample of retailers reported that they had the following number

Please show all work and do not use excel functions tor find answers.

1. A sample of retailers reported that they had the following number of copies of statistics textbooks in inventory: 57, 81, 69, 84, 85, 79, 71, 74, 55.

a. What is the mean number of textbooks in inventory?

b. What is the median number of textbooks in inventory?

c. What is the range of the number of textbooks in inventory?

d. What is the standard deviation of the number of textbooks in inventory?

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