A random variable has a mean of 6.5 and a standard deviation of 3.45. With a random sample of 40 observations, what is the probability of obtaining a sample mean greater than 6.9? Group of answer choices 0.8770 0.2327 0.1230 0.7673

A random variable has a mean of 6.5 and a standard deviation of 3.45. With a random sample of 40 observations, what is the probability of obtaining a sample mean greater than 6.9? Group of answer choices 0.8770 0.2327 0.1230 0.7673

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A random variable has a mean of 6.5 and a standard deviation of 3.45. With a random sample of 40 observations, what is the probability of obtaining a sample mean greater than 6.9?

Group of answer choices

0.8770

0.2327

0.1230

0.7673

thanks

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