Question: Step by step answer please Question 2 of 4 (1 point) Attempt 1 of Unlimited View question in a popup 7.4 Section Exercise 4 Lifetimes

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Question 2 of 4 (1 point) Attempt 1 of Unlimited View question in a popup 7.4 Section Exercise 4 Lifetimes of Wristwatches A random sample of the lifetimes of 21 inexpensive wristwatches has a standard deviation of 4.8 months. Assume the variable is normally distributed. Use the chi-square distribution table to find any chi-square values to three decimal places. Round your final answers to one decimal place. Part: 0 / 2 Part 1 of 2 Find the 95% confidence intervals for the variance and standard deviation.

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