# Question

The range for a set of data is estimated to be 36.

a. What is the planning value for the population standard deviation?

b. At 95% confidence, how large a sample would provide a margin of error of 3?

c. At 95% confidence, how large a sample would provide a margin of error of 2?

a. What is the planning value for the population standard deviation?

b. At 95% confidence, how large a sample would provide a margin of error of 3?

c. At 95% confidence, how large a sample would provide a margin of error of 2?

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