lulu5351
17.10.2019 •
Mathematics
Suppose there is a 13.9 % probability that a randomly selected person aged 40 years or older is a jogger. in addition, there is a 15.6 % probability that a randomly selected person aged 40 years or older is male comma given that he or she jogs. what is the probability that a randomly selected person aged 40 years or older is male and jogs question mark would it be unusual to randomly select a person aged 40 years or older who is male and jogs question mark the probability that a randomly selected person aged 40 years or older is male and jogs is nothing (round to three decimal places as
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Ответ:
There is a 2.17% probability that a randomly selected person aged 40 years or older is male and jogs.
It would be unusual to randomly select a person aged 40 years or older who is male and jogs.
Step-by-step explanation:
We have these following probabilities.
A 13.9% probability that a randomly selected person aged 40 years or older is a jogger, so .
In addition, there is a 15.6% probability that a randomly selected person aged 40 years or older is male comma given that he or she jogs. I am going to say that P(B) is the probability that is a male. is the probability that the person is a male, given that he/she jogs. So
The Bayes theorem states that:
In which is the probability that the person does both thigs, so, in this problem, the probability that a randomly selected person aged 40 years or older is male and jogs.
So
There is a 2.17% probability that a randomly selected person aged 40 years or older is male and jogs.
A probability is unusual when it is smaller than 5%.
So it would be unusual to randomly select a person aged 40 years or older who is male and jogs.
Ответ:
9 1/16 or about 9 books
Step-by-step explanation:
14.5÷1.6=9.625 9.625= about 9