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Chapter 3: Q 3.33. (page 103)

U.S Supreme Court Justices. From Wikipedia, we found that the ages of the justices of the U.S Supreme Court, as of September 9, 2013, are as follows, in year.

Part (a) find n

Part (b) Compute鈭�xi

Part (c) Determine the sample mean. Round your answer to one more decimal place than that used for the observation.

Short Answer

Expert verified

Part (a) 9

Part (b) 607

Part (c) 67.4

Step by step solution

01

Part (a) Step 1. Given information.

The provided data set is:

58, 77, 77, 65, 80, 75, 63, 59, 53

02

Part (a) Step 2. The value of n 

The given collection is: 58, 77, 77, 65, 80, 75, 63, 59, 53

The number of samples is 9

Then

n=9

As a result, the value of n is 9.

03

Part (b) Step 1. Given information.

The provided data set is:

58, 77, 77, 65, 80, 75, 63, 59, 53

04

Part (b) Step 2. The value of ∑xi

The value of 鈭�xiis calculated as follows:

鈭�xi=58+77+77+65+80+75+63+59+53鈭�xi=607

As a result, the value of 鈭�xiis 607

05

Part (c) Step 1. Given information.

The provided data set is:

58, 77, 77, 65, 80, 75, 63, 59, 53

06

Part (c) Step 2 The sample average.

Mean is expressed as follows:

x炉=鈭�xn

The mean of the given data set is computed as follows:

x炉=6079x炉=67.4

As a result, the sample mean days is 67.4.

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Most popular questions from this chapter

Simple data sets have been given for you to try locating the descriptive metrics mentioned in this section. For each data set separately.

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