The shape of the distribution of the time required to get an oil change at a 15-minute oil-change facility is unknown. However, records indicate that the mean time is 16.9 minutes, and the standard deviation is 4.6 minutes. Complete parts (a) through (c) below. Click here to view the standard normal distribution table (page 1) Click here to view the standard normal distribution table (page 2). (a) To compute probabilities regarding the sample mean using the normal model, what size sample would be required? Choose the required sample size below. OA. The sample size needs to be greater than 30. O B. Any sample size could be used. OC. The sample size needs to be less than 30. OD. The normal model cannot be used if the shape of the distribution is unknown.

The shape of the distribution of the time required to get an oil change at a 15-minute oil-change facility is unknown. However, records indicate that the mean time is 16.9 minutes, and the standard deviation is 4.6 minutes. Complete parts (a) through (c) below. Click here to view the standard normal distribution table (page 1) Click here to view the standard normal distribution table (page 2). (a) To compute probabilities regarding the sample mean using the normal model, what size sample would be required? Choose the required sample size below. OA. The sample size needs to be greater than 30. O B. Any sample size could be used. OC. The sample size needs to be less than 30. OD. The normal model cannot be used if the shape of the distribution is unknown.

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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