Question
An unknown distribution has a mean of 90 and a standard deviation of 20. Samples of size n = 25 are drawn randomly from the
An unknown distribution has a mean of 90 and a standard deviation of 20. Samples of size n = 25 are drawn randomly from the population.
Let X = the mean of a sample of size 25. X = 90, X = 25, and n = 25.
Find the value that is two standard deviations above the expected value, 90, of the sample mean.
Options:
98
96
95
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College Algebra
Authors: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
12th edition
134697022, 9780134313795 , 978-0134697024
