SOLUTION: Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine if the events are unusual. If convenient,
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-> SOLUTION: Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine if the events are unusual. If convenient,
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Question 1171245: Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine if the events are unusual. If convenient, use the appropriate probability table or technology to find the probabilities.
Fifty-three
percent of adults say that they have cheated on a test or exam before. You randomly select
seven
adults. Find the probability that the number of adults who say that they have cheated on a test or exam before is (a) exactly
four,
(b) more than
two,
and (c) at most
five.
The probability of successes in independent trials where the probability of success for any single trial is is given by:
The probability of more than successes is then
Alternatively, it may save some arithmetic to note that
"At most" means less than or equal which might be easier to calculate using one minus greater than.
John
My calculator said it, I believe it, that settles it
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