Lower confidence interval for the variance of the population
Suppose you have a sample of 6 observations from a normal population. the sample variance is equal to 4. Find a 90% lower confidence interval for the variance of the population
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He takes a sample of 36 of the team's games under the new coach and finds that the team score an average of 101 points with the standard deviation of 6 points. Over the past 10 years, the team had average of 99 points. test the claim at 1% signifi
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