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Find a 90% confidence Interval for the mean of a normal distribution if =2 and if a sample of size 8 gave the values 9,14,10,123,7,13,11,12.
Find a 90% confidence Interval for the mean of a normal distribution if =2 and if a sample of size 8 gave the values 9,14,10,123,7,13,11,12. what would be the confidence interval if were unknown?
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