A file titled Halloween contains sample data on Halloween spending for costumes. a. Calculate the mean and

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A file titled Halloween contains sample data on Halloween spending for costumes.

a. Calculate the mean and standard deviation of these data.

b. Determine the following intervals for this data set:

x { 1s, x { 2s, x { 3s.

c. Suppose your responsibility as an assistant manager of a costume store was to determine the price of costumes to be sold. The manager has informed you to set the price of one costume so that it was beyond the budget of only 2.5% of the customers. Assume that the data set has a bell-shaped distribution.

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Business Statistics

ISBN: 9781292220383

10th Global Edition

Authors: David Groebner, Patrick Shannon, Phillip Fry

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