Question

Happy-Owners Not Happy-Owners 3 6 5 5 2 6 3 5 2 7 4 5 3...

Happy-Owners

Not Happy-Owners

3

6

5

5

2

6

3

5

2

7

4

5

3

6

4

5

3

8

4

8

Calculate mean and standard deviation for each group.

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

To calculate mean and sd of Happy owners :

  

happy owner

Xi
3 9
5 25
2 4
3 9
2 4
4 16
3 9
4 16
3 9
4 16
Total 33 117

So,

and

Mean and sd of Not happy owners :

Not Happy owners Yi   
6 36
5 25
6 36
5 25
7 49
5 25
6 36
5 25
8 64
8 64
Total 61 385

So, Mean   

and sd

  

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