The numbers listed are hours of reserve capacity for 10 randomly selected automotive batteries. Assume the...

The numbers listed are hours of reserve capacity for 10 randomly selected automotive batteries. Assume the sample is taken from a normally distributed population. Construct 80% confidence intervals for (a) the population variance (σ^2) and (b) the population standard deviation (σ).

1.71 1.93 1.87 1.39 1.52 1.53 1.67 1.44 1.76 2.08

If you could show step by step, that would be awesome! I tried a previous question like this the way I was shown in my textbook but I couldn't seem to get it right. Thanks!

Expert Solution

a)

b)

orchestra answered 2 years ago

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