(a) If X is the sample mean diameter for a random sample of n= 20 rings, what is the mean of X, and what is the standard deviation of the X distribution? Round your answer to two decimal places. (b) Answer the questions posed in part (a) for a sample size of n= 80 rings. Round your answer to 4 decimal places. (c) For which of the two random samples, the one from part (a) or the one from part (b), is X more likely to be within 0.01cm of 15 cm? Explain your reasoning.
(a) If X is the sample mean diameter for a random sample of n= 20 rings, what is the mean of X, and what is the standard deviation of the X distribution? Round your answer to two decimal places. (b) Answer the questions posed in part (a) for a sample size of n= 80 rings. Round your answer to 4 decimal places. (c) For which of the two random samples, the one from part (a) or the one from part (b), is X more likely to be within 0.01cm of 15 cm? Explain your reasoning.
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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