As part of an experiential learning project, a group of ECON 227 students conducts an in-depth interview with the manager of a Starbucks store in Bloomington. From past records, the store manager tells the student researchers that during the first 30 minutes after the store is open, her store serves anywhere between 0 and 5 customers. She even goes out of her way to provide the students with the following probability distribution function for the number of customers served at her store during this time window: Customers served Probability 5 0.10 4 0.15 3 0.20 2 0.30 1 0.15 0 0.10 Find the expected value of the pdf. Find the standard deviation.

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As part of an experiential learning project, a group of ECON 227 students conducts an in-depth interview with the manager of a Starbucks store in Bloomington. From past records, the store manager tells the student researchers that during the first 30 minutes after the store is open, her store serves anywhere between 0 and 5 customers. She even goes out of her way to provide the students with the following probability distribution function for the number of customers served at her store during this time window:

Customers served

Probability

5

0.10

4

0.15

3

0.20

2

0.30

1

0.15

0

0.10

  1. Find the expected value of the pdf.
  2. Find the standard deviation.
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