The following probability distribution table shows the number of cars the top Sales Agents at Car Plus sells in a day and their corresponding probability.   Number of cars, x 0 1 2 3 4 Probability, P(X = x) 0.10 0.20 0.30 a 0.05   Calculate the value of a  On a typical day, how many cars should the top sales agent expect to sell?  What is the variance of the distribution?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 23PFA
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The following probability distribution table shows the number of cars the top Sales Agents at Car Plus sells in a day and their corresponding probability.

 

Number of cars, x

0

1

2

3

4

Probability, P(X = x)

0.10

0.20

0.30

a

0.05

 

  1. Calculate the value of
  2. On a typical day, how many cars should the top sales agent expect to sell? 
  3. What is the variance of the distribution? 

 

 

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