Confidence interval of the mean score
The average score for 49 teenage boys playing a certain computer game was 75,000 points per player. If the standard deviation of the population is 20,000 points, find the 99% confidence interval of the mean score for all teenage boys.
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Change the last number from 1.53 to 50 and recalculate the confidence interval. Using the results, describe the effect of an outlier or extreme value on the confidence interval.
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