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# Refer to Exercise 1. The vendor begins using heavier ISBN: 9780073401331 38

## Solution for problem 2SE Chapter 1

Statistics for Engineers and Scientists | 4th Edition

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Problem 2SE

Refer to Exercise 1. The vendor begins using heavier packaging, which increases the weight of each package by 50 g.

a. How does this affect the mean weight of the packages?

b. How does this affect the standard deviation of the weights?

Step-by-Step Solution:

Step 1 of 3:

A vendor begins using heavier packaging, by increasing the weight of each packages by 50 kg.

We have to find

How does this affect the mean weight of packages.How does this affect the standard deviation of  weight of packages.

Step 2 of 3:

(a) we have to calculate the mean if the weight of each packages increase by 50 kg. If we denote the old mean of packages as and the new mean as .

So the old mean of packages = ( where n number of packages). = = = +  50 = + 50

So the mean of packages will increase by 50.

Step 3 of 3

##### ISBN: 9780073401331

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