In a group of 30 students, the probability that at most 25 of them like to swim is 38%. What is the probability that at least 26 of th

Question

In a group of 30 students, the probability that at most 25 of them like to swim
is 38%. What is the probability that at least 26 of them like to swim?
A- 38
B- 62
C-55
D-44

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Genesis 8 hours 2021-09-13T11:24:13+00:00 1 Answer 0

Answers ( )

    0
    2021-09-13T11:25:42+00:00

    Answer:

    P(A) = at most 25 of them like to swim

    P(B) = at least 26 of them like to swim

    P(A) +P(B) = 100%

    => P(B) = 100-P(A) = 100-38 =62%

    => B is correct

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45:7+7-4:2-5:5*4+35:2 =? ( )