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Aleks [24]
3 years ago
14

Does listening to soothing music help employees concentrate better? A psychologist studied the number of puzzles employees of a

large business were able to solve in a five-minute period while listening to soothing music. Let X be the number of puzzles completed successfully by a subject. The psychologist found that X had the following probability distribution.
#Puzzles completed Probability
0 0.06
1 0.16
2 0.19
3 0.32
4 0.24
5 0.03
What is the expected number of puzzles completed by an employee ?
Business
1 answer:
ololo11 [35]3 years ago
8 0

Answer:

Total puzzles solved expected by an employee: 2.61

Explanation:

we multiply each outcome by the probability adn then add them together. Thus, we are doing a weighted-average

0 x 0.06  =      0.00

1 x 0.16    =      0. 16

2 x 0.19   =      0.38

3 x 0.32  =      0.96

4 x 0.24  =      0.96

5 x 0.03  =<u>      0. 15 </u>

Total puzzles  2.61

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