A variable of a population has a mean ofμ = 250 and a standard deviation of o = 28.a. The sampling distribution of the sample mean forsamples of size 49 is approximately normallydistributed with meanand standarddeviationb. For part (a) to be true, what assumption did youmake about the distribution of the variable underconsideration?A. Uniform distribution.B. No assumption was made.C. Normal distribution.c. Is the statement in part (a) still true if the samplesize is 16 instead of 49? Why or why not?A. Yes, the sampling distribution of the samplemean is always normal.B. No. Because the distribution of the variableunder consideration is not specified, a sample sizeof at least 30 is needed for part (a) to be true.C. No, the sampling distribution of the samplemean is never normal for sample size less than 30.

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Answered: A variable of a population has a mean…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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