I need help with stats/2023 (section 6.1) A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 people and obtains the results below. From past studies, the publisher assumes that σ is 1.9 minutes and that the population of times is normally distributed. Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals. 9, 6, 6, 7, 12, 8, 9, 7,8,6,11,6,10,8,10 The 90% confidence interval is (______ , _________) (round to one decimal place as needed.) The 99% confidence interval is (_________, ________) (round to one decimal place as needed) Which interval is wider? The 99% confidence interval or 90% confidence interval
I need help with stats/2023 (section 6.1)
A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 people and obtains the results below. From past studies, the publisher assumes that
is
minutes and that the population of times is
Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals.
9, 6, 6, 7, 12, 8, 9, 7,8,6,11,6,10,8,10
The 90% confidence interval is (______ , _________) (round to one decimal place as needed.)
The 99% confidence interval is (_________, ________) (round to one decimal place as needed)
Which interval is wider?
The 99% confidence interval
or
90% confidence interval
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