1. A sample of 20 items provides a sample standard deviation of 5. a. Compute the...

1. A sample of 20 items provides a sample standard deviation of 5.

a. Compute the 90% confidence interval estimate of the population variance. (2pts)

b. Compute the 95% confidence interval estimate of the population variance.(2pts)

c. Compute the 95% confidence interval estimate of the population Standard Deviation.(2pts)

2. The variance in drug weights is critical in the pharmaceutical industry. For a specific drug, with weights measured in grams, a sample of 18 units provided a sample variance of s2 = 0.36.

a.Construct a 90% confidence interval estimate of the population variance for the weight of this drug.(2pts)

b.Construct a 90% confidence interval estimate of the population standard deviation.(2pts)

Expert Solution

orchestra answered 11 months ago

A sample of 20 items provides a sample standard deviation of 5. a. Compute the 90%...

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