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Let X represent a binomial random variable with n = 125 and p = 0.19. Find...

Let X represent a binomial random variable with n = 125 and p = 0.19. Find the following probabilities. (Do not round intermediate calculations. Round your final answers to 4 decimal places.)

a. P(X ≤ 25)
b. P(X = 15)
c. P(X > 35)
d. P(X ≥ 30)
math   Statistics-And-Probability   
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Answer #1

By using the R--code


a=pbinom(25,125,0.19);a
b=dbinom(15,125,0.19);b
c=1-pbinom(35,125,0.19);c
d=1-pbinom(29,125,0.19);d

And the output is

[1] 0.6622

[1] 0.0118

[1] 0.0052

[1] 0.0973

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