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Mathematics, 04.12.2019 03:31 antonjas001
Suppose x has a distribution with a mean of 80 and a standard deviation of 3. random samples of size n = 36 are drawn. (a) describe the x distribution and compute the mean and standard deviation of the distribution. x has distribution with mean μx = and standard deviation σx = . (b) find the z value corresponding to x = 81. z = (c) find p(x < 81). (round your answer to four decimal places.) p(x < 81) = (d) would it be unusual for a random sample of size 36 from the x distribution to have a sample mean less than 81? explain. yes, it would be unusual because less than 5% of all such samples have means less than 81. no, it would not be unusual because more than 5% of all such samples have means less than 81. no, it would not be unusual because less than 5% of all such samples have means less than 81. yes, it would be unusual because more than 5% of all such samples have means less than 81.
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Suppose x has a distribution with a mean of 80 and a standard deviation of 3. random samples of size...
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