7. Hypothesis Testing: One-sample t-test
Confidence Interval for μ when σ is Unknown
A professor at a university wants to estimate the time his students spend on their homework.
He collects a random sample of #71# students. On average, these students spent #6.3# hours a week on their homework with a standard deviation of #s=1.5# hours.
Construct a #91\%# confidence interval for the population mean #\mu#. Round your answers to #3# decimal places.
He collects a random sample of #71# students. On average, these students spent #6.3# hours a week on their homework with a standard deviation of #s=1.5# hours.
Construct a #91\%# confidence interval for the population mean #\mu#. Round your answers to #3# decimal places.
#CI_{\mu,\,91\%}=\,(##,\,\,\, ##)#
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