In the past, a business noted its mean sales order size was $100. This business is interested intesting whether a recent advertising campaign has increased its mean sales order size. A randomsample of 40 orders produced a sample mean of $105. Assume the standard deviation is knownto be $15 and sales order size is normally distributed. What is the test statistic?1.492.582.362.11O 1.05ORMẢW30P

Sample size n =40Sample mean=105Standard deviation =15

Answered: past, a business noted its mean sales…

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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An insurance company crashed four cars of the same model at 5 miles per hour. The costs of repair for each of the four crashes were $444, $447, $470, and $207 O. Compute the mean, median, and mode cost of repair. Compute the mean cost of repair. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mean cost of repair is $ (Round to the nearest cent as needed.) O B. The mean does not exist. Compute the median cost of repair. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The median cost of repair is $ (Round to the nearest cent as needed.) O B. The median does not exist. Compute the mode cost of repair. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mode cost of repair is $ (Round to the nearest cent as needed.) O B. The mode does not exist.

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