Question: Assume that each sample is obtained by randomly selecting values from a population with a normal distribution. Refer to Data Set 11 in Appendix B.

Assume that each sample is obtained by randomly selecting values from a population with a normal distribution.
Refer to Data Set 11 in Appendix B.
a. Use the range rule of thumb (see Section 2-5) to estimate s, the standard deviation of the weights of brown M&M plain candies.
b. Construct a 98% confidence interval for σ.
c. Does the confidence interval contain your estimated value of σ?

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