Question: Give two situations in which making an inference about a population standard deviation would be important. In each of Exercises 11.1511.20, we have provided a

Give two situations in which making an inference about a population standard deviation would be important.

In each of Exercises 11.15–11.20, we have provided a sample standard deviation and sample size. In each case, use the one-standarddeviation χ2-test and the one-standard-deviation χ2-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval.

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