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.
1- Compute the mean and standards deviation for the data set.
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Get Help Now!2- Compute the 95% confidence interval for the mean and the 95% confidence interval for the standard deviation.
3- Compute the percentage of stocks that had a gain in the last quarter.
4- Find a 95% confidence interval for the percentage of stocks with a gain.
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