The following information is available on the amount of time (in minutes) 100 customers were put...
- The following information is available on the amount of time (in minutes) 100 customers were put on hold before their calls to a company’s Customer Service 800-number were answered:
|
Class # |
Class (minutes) |
# of Customers |
|||
|
1 |
0 and under 2 |
52 |
|||
|
2 |
2 and under 4 |
20 |
|||
|
3 |
4 and under 6 |
15 |
|||
|
4 |
6 and under 8 |
9 |
|||
|
5 |
8 and under 10 |
4 |
|||
|
Total |
100 |
- What is the approximate average amount of time customers were put on hold? (2 marks)
- What is the approximate standard deviation of the time customers were put on hold? (2 marks)
- What percentage of customers were put on hold for greater than 8 minutes?
(2 marks)
d) What percentage of customers were put on hold for 6 minutes or less?
(2 marks)
Homework Answers
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