Fifteen percent of new residential central air conditioning units installed by a supplier need additional adjustments...
- Fifteen percent of new residential central air conditioning units installed by a supplier need additional adjustments requiring a service call. Seven units are selected at random. What is the probability that at least one of these seven units needs additional adjustments?
| a. |
0.9263 |
|
| b. |
0.6794 |
|
| c. |
0.9980 |
|
| d. |
0.3960 |
|
| e. |
0.7866 |
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Fifteen percent of new residential central air conditioning
units installed by a supplier need additional adjustments...
Accountancy
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