Suppose the Internet retailer Buy. com would like to investigate the relationship between the amount of time

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Suppose the Internet retailer Buy. com would like to investigate the relationship between the amount of time in minutes a purchaser spends on its Web site and the amount of money he or she spends on an order. The ­following table shows the data from a random sample of 12 customers. These data can also be found in the Excel file Buy. com. xlsx.
Suppose the Internet retailer Buy. com would like to investigate

a. Calculate the Spearman rank- order correlation coefficient.
b. Using a = 0.05, perform a hypothesis test to determine if the population rank correlation coefficient is different than zero.

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Business Statistics

ISBN: 9780321925121

2nd Edition

Authors: Robert A. Donnelly

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