Question:
As part of a water quality survey, you test the water
Last updated: 7/20/2022
As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are shown below. Construct a confidence interval for the population variance o2 and the population standard deviation o. Use a 99% level of confidence. Assume that the population has a normal distribution. n=17 s = 12 grains per gallon What is the confidence interval for the population variance σ²? (Round to one decimal place as needed.)