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Expected value and standard deviation.

On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day.

 

 

 

 

 

 

x

30

50

75

110

Total

P(x)

.10

.50

.10

.30

1.00


Analyse the expected value and standard deviation of this random variable. (Round your answers to 2 decimal places.)

  Expected value  

  Standard Deviation 

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920859

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