Question
Asked Oct 18, 2019
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I don't understand how to use the given information to answer the questions about the mean and standard deviation. Can you explain?

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Expert Answer

Step 1

Given probability distribution is:

Activities

0

1

2

3

4

5

6

7

Probability

0.059

0.123

0.164

0.177

0.210

0.129

0.084

0.054

 

Explanation:

Let x is random variable.

The mean is calculated as follows:

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Step 2

Hence, the mean is 3.3.

The standard devia...

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Image Transcriptionclose

-4xP(s) X i-1 (0-3.3)' x0.059+(1-3.3) x 0.123+ (2-3.3) x 0.164 |+(3-3.3)x 0.177+(4-3.3) x 0.210+(5-3.3)x0.129 +(6-3.3) x 0.084 +(7-3.3) x0.054 _ = 1.84 = 1.8

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Statistics

Measures

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