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Most companies have increased their dependence on computers and software as a result more employee time...

Most companies have increased their dependence on computers and software as a result more employee time is spent on the telephone with technical support for the software a sample of a time spent on the phone with technical support year did the following data.
Time in minutes (11,9,9,8,12,13,11,14)
Construct a 98 percent confidence interval estimate of the true mean population time that is spent by employees on the telephone with technical support for the software. Negative values should be indicated by a minus sign. Report your answers to 2 decimal places using conventional rounding rules.
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