Exhibit 8-1 in Order to Estimate the Average Time Spent on the on the Computer

question 103

Multiple Choice

Exhibit 8-1
In order to estimate the average time spent on the computer terminals per student at a local university, data were collected from a sample of 81 business students over a one-week period. Assume the population standard deviation is 1.2 hours.
-Refer to Exhibit 8-1. The standard error of the mean is

• A)7.5
• B)0.014
• C)0.160
• D)0.133

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