6.76 Scores on a particular test, taken by a large group of students, follow a normal distribution...

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6.76 Scores on a particular test, taken by a large group of students, follow a normal distribution with a variance of 2500. A random sample of 25 scores was taken to estimate the population’s mean score. Let the random variable x denote the sample mean. What is the probability that the interval 1x - 102 to 1x + 102 contains the true population mean?

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Essential Mathematics And Statistics For Science

ISBN: 9780470694480

2nd Edition

Authors: Graham Currell, Dr. Antony Dowman

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