The Nebraska Cable Television authority conducted a test to determine the amount of time people spend watching television per week. The NCTA surveyed 84 subscribers and found the average number of hours watched per week to be 11.6 hours and the standard deviation to be 1.8 hours.
- What is the estimated population standard deviation for this population? (There are about95,000 people with cable television in Nebraska.
- Calculate the estimated standard error of the mean..
- Construct a 98 percent confi dence interval for the population mean.
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