•do data project 1- business and finance on page 589 of the textbook

use 30 stocks classified as the Dow Jones industrials as the sample. note the amount each stock has gained or lost in the last quarter. compute the mean and standard deviation for the data set. compute the 95% confidence interval for the mean and the 95% confidence interval for the standard deviation.compute the percentage of stocks that had a gain in the last quarter.Find a 95% confidence interval for the percentage of stocks with a gain.

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