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Question 4
4 pts
If a binomial distribution applies with a sample size of 20, find the probability of at least 7
successes if the probability of a success is 0.25.
For x, choose the correct answer from the following and type the corresponding letter in
the blank:
More than 7--a
7 or more--b
exactly 7--c
7 or less--d
less than 7--e
Probability of at least 7 successes (round to 4 decimal places)=

Top Answer

P(x 7), n=20 and p=0.25 The probability that at least 7 successes is given as follows; P(x) =1-p(x<7) x ... View the full answer


| Moi University Examination Answer Book
Do not write
Write on both sides of the paper
in either
P (x 21 ) 1 20 P 20 . 25
P ( x 7 7 ) = 1 - P ( X < 7 )
P ( x < 7 )...

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