The following sample was taken: 1, 9, 11, 3, 12, 15, 16, 8, 7, 8, 12,...

The following sample was taken:

1, 9, 11, 3, 12, 15, 16, 8, 7, 8, 12, 3, 2, 6, 6, 7, 8, 10, 9, 5, 6, 7, 8, 6, 8, 7

a. Calculate the average

b. Estimate the variance

c. Build a 95% confidence interval for the standard deviation.

Please, give your answer by hand. Thanks in advance.

Expert Solution

orchestra answered 2 years ago

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