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u= 100 and a standard deviation of o = a. The sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with mean and standard deviation b. For part (a) to be true, what assumption did you make about the distribution of the variable under consideration? A. Normal distribution. 49. B. Uniform distribution. OC. No assumption was made. c. Is the statement in part (a) still true if the sample size is 16 instead of 49? Why or why not? OA. No, the sampling distribution of the sample mean is never normal for sample size less than 30. B. Yes, the sampling distribution of the sample mean is always normal.

u= 100 and a standard deviation of o = a. The sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with mean and standard deviation b. For part (a) to be true, what assumption did you make about the distribution of the variable under consideration? A. Normal distribution. 49. B. Uniform distribution. OC. No assumption was made. c. Is the statement in part (a) still true if the sample size is 16 instead of 49? Why or why not? OA. No, the sampling distribution of the sample mean is never normal for sample size less than 30. B. Yes, the sampling distribution of the sample mean is always normal.

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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A variable of a population has a mean of 49. μ = 100 and a standard deviation of o a. The sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with mean and standard deviation b. For part (a) to be true, what assumption did you make about the distribution of the variable under consideration? A. Normal distribution. B. Uniform distribution. C. No assumption was made. c. Is the statement in part (a) still true if the sample size is 16 instead of 49? Why or why not? OA. No, the sampling distribution of the sample mean is never normal for sample size less than 30. OB. Yes, the sampling distribution of the sample mean is always normal. C. No. Because the distribution of the variable under consideration is not specified, a sample size of at least 30 is needed for part (a) to be true.
Transcribed Image Text:A variable of a population has a mean of 49. μ = 100 and a standard deviation of o a. The sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with mean and standard deviation b. For part (a) to be true, what assumption did you make about the distribution of the variable under consideration? A. Normal distribution. B. Uniform distribution. C. No assumption was made. c. Is the statement in part (a) still true if the sample size is 16 instead of 49? Why or why not? OA. No, the sampling distribution of the sample mean is never normal for sample size less than 30. OB. Yes, the sampling distribution of the sample mean is always normal. C. No. Because the distribution of the variable under consideration is not specified, a sample size of at least 30 is needed for part (a) to be true.
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