Question
For an equipment used in hospital, the data shown below indicate the battery lifetime in hours: Classes Frequency 10 - 15 6 15 - 20
For an equipment used in hospital, the data shown below indicate the battery lifetime in hours:
| Classes | Frequency |
|
|
|
|
| 10 - 15 | 6 |
|
|
|
|
| 15 - 20 | 3 |
|
|
|
|
| 20 - 25 | 12 |
|
|
|
|
| 25 - 30 | 15 |
|
|
|
|
| 30 - 35 | 21 |
|
|
|
|
| 35 40 | 3 |
|
|
|
|
Compute the mean and the standard deviation of this distribution.
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Elementary Statisitcs
Authors: Barry Monk
2nd edition
1259345297, 978-0077836351, 77836359, 978-1259295911, 1259295915, 978-1259292484, 1259292487, 978-1259345296
