Question 2 of 4 (1 point) | Attempt 1 of Unilimited View question in a popup 7 4 Section Exer Lifetimes of Wristwatches A random sample of the lifetimes of 26 inexpensive wristwatches has a standard deviation of 3.9 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 90% confidence intervals for the variance and standard deviation