A sample​ mean, sample​ size, population standard​ deviation, and confidence level are provided. Use this information to complete parts​ a) below.   x overbarxequals=2121​, nequals=3232​, sigmaσequals=33​, confidence levelequals=9595​%   a) Use the​ one-mean z-interval procedure to find a confidence interval for the mean of the population from which the sample was drawn.

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We are asked to find the confidence level of the mean of the population that a sample was drawn from. The data from the sample is `bar(x)=21, n=32, sigma=3` with a 95% confidence (`alpha=.05` )

Since we know the standard deviation of the population we use the standard normal table (`z-` table.)

The confidence interval...

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