SOLUTION: a fire system has seven fail safe components. The probability of each failing is 0.07. Find these probabilities.
1. exactly 4 will fail
2.More then four will fail
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-> SOLUTION: a fire system has seven fail safe components. The probability of each failing is 0.07. Find these probabilities.
1. exactly 4 will fail
2.More then four will fail
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Question 1166409: a fire system has seven fail safe components. The probability of each failing is 0.07. Find these probabilities.
1. exactly 4 will fail
2.More then four will fail Answer by solver91311(24713) (Show Source):
The probability of successes in trials where the probability of success on any given trial is is given by:
The probability of at most successes in trials where the probability of success on any given trial is is given by:
The probability of at least successes in trials where the probability of success on any given trial is is given by:
The probability of more than successes in trials where the probability of success on any given trial is is given by:
Make adjustments to the summation indices depending on exactly what you are looking for. Also note the following relationship that may save you some arithmetic:
John
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