Consider the following random sample from a normal population: 14, 10, 13, 16, 12, 18, 15, and 11. What is the 95% confidence interval for the population variance? 3.11 to 29.51 11.39 to 15.86 6.54 to 38.82 11.2 to 5.69
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Step 1
The sample variance is calculated as the sum of the squared differences from the mean divided by the number of observations minus 1. The mean of the sample is (14+10+13+16+12+18+15+11)/8 = 13.75 The squared differences from the mean are: (14-13.75)^2, Show more…
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