This data set: 14, 8, 1, 7, 8, 4, 5, 13, 5, 9 has sample mean 7.4 and sample standard deviation 3.978. (a) Use the given information to calculate the 99% confidence level of the population standard deviation. Show the formulas and how they are used in your computation. (b) State any assumption needed to do this computation.

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This data set: 14, 8, 1, 7, 8, 4, 5, 13, 5, 9
has sample mean 7.4 and sample standard
deviation 3.978.
(a) Use the given information to calculate the
99% confidence level of the population
standard deviation. Show the formulas and
how they are used in your computation.
(b) State any assumption needed to do this
computation.

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