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R Programming: Staff, faculty, students and the community are being encouraged to show their school spirit...

R Programming:

Staff, faculty, students and the community are being encouraged to show their school spirit by wearing red and gold on Friday of each week. It has been estimated that 30% of the school students are not aware of school spirit day. A random sample of 25 students was selected.

How many students would one expect to not be aware of spirit day? What R code is needed to compute this?

math   Statistics-And-Probability   
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Answer #1

X follow binomial distribution

E(X) = np

n < - 25

p <- 0.3

average <- n*p
> average
[1] 7.5

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