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A medical laboratory tested 8 samples of human blood for acidity on the pH scale, with...

A medical laboratory tested 8 samples of human blood for acidity on the pH scale, with the results below.

7.1 7.4 7.4 7.1 7.3 7.1 7.4 7.4

a. Find the mean and standard deviation.

b. What percentage of the data is within 3 standard deviations of the mean?

Math   Statistics-And-Probability   
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