Twenty-five samples are taken from a normal distribution of unknown variance. The sample standard deviation is...

 

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Twenty-five samples are taken from a normal distribution of unknown variance. The sample standard deviation is determined to be S = 5. The usual confidence interval (at the 95% level) is found to be -1, 1]. What is the probability that u is between - and ? Twenty-five samples are taken from a normal distribution of unknown variance. The sample standard deviation is determined to be S = 5. The usual confidence interval (at the 95% level) is found to be -1, 1]. What is the probability that u is between - and ?