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 σ is 1.8 minutes and that the population of times is normally distributed.    7     7     9     10     6      10     7    8    11    11    8     6   9   7   9   Construct the​ 90% and​ 99% confidence intervals for the population mean. Which interval is​ wider? If​ convenient, use technology to construct the confidence intervals.   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 The​ 90% confidence interval

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A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.