Fifteen items or less: The number of customers in line at a supermarket express checkout counter is a random variable with the following probability distribution. 0 1 2 3 4 5 P(x) 0.05 0.25 0.30 0.20 0.10 0.10 X Send data to Excel Part 1 of 3 (a) Compute the mean Hy. Round the answer to two decimal places. Px-[ Part: 1/3 Part 2 of 3 (b) Compute the standard deviation dy Round your answer to 4 decimal places if necessary. ox

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Fifteen items or less: The number of customers in line at a supermarket express checkout counter is a random variable with the following probability
distribution.
0 1
3
4 5
P(x) 0.05 0.25 0.30 0.20 0.10 0.10
Send data to Excel
Part 1 of 3
(a) Compute the mean Hy. Round the answer to two decimal places.
Part: 1/3
2
Part 2 of 3
(b) Compute the standard deviation a. Round your answer to 4 decimal places if necessary.
Transcribed Image Text:Fifteen items or less: The number of customers in line at a supermarket express checkout counter is a random variable with the following probability distribution. 0 1 3 4 5 P(x) 0.05 0.25 0.30 0.20 0.10 0.10 Send data to Excel Part 1 of 3 (a) Compute the mean Hy. Round the answer to two decimal places. Part: 1/3 2 Part 2 of 3 (b) Compute the standard deviation a. Round your answer to 4 decimal places if necessary.
Dirty air: The federal government has enacted maximum allowable standards for air pollutants such as ozone. Let X be the number of days per year that the
level of air pollution exceeds the standard in a certain city. The probability distribution of X is given by
X
01234
P(x) 0.34 0.39 0.17 0.06 0.04
Send to Excel
Part: 0/2
Part 1 of 2
(a) Compute the mean y Round the answer to at least two decimal places.
Part: 1/2
Part 2 of 2
(b) Compute the standard deviation d Round the answer to at least three decimal places
Transcribed Image Text:Dirty air: The federal government has enacted maximum allowable standards for air pollutants such as ozone. Let X be the number of days per year that the level of air pollution exceeds the standard in a certain city. The probability distribution of X is given by X 01234 P(x) 0.34 0.39 0.17 0.06 0.04 Send to Excel Part: 0/2 Part 1 of 2 (a) Compute the mean y Round the answer to at least two decimal places. Part: 1/2 Part 2 of 2 (b) Compute the standard deviation d Round the answer to at least three decimal places
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