Question 1177775: According to a recent survey, 90% of students say that they do not get enough sleep. Assume the survey meets the conditions of a binomial experiment. Round your answers to three decimal places
In a random survey of 28 students, find the probability that exactly 26 of them will say that they do not get enough sleep:
In a random survey of 28 students, find the probability that more than 26 of them will say that they do not get enough sleep:
Answer by ewatrrr(24785)   (Show Source):
You can put this solution on YOUR website!
Hi
Binomial Distribution: p(do not get enough sleep) = .9
Using TI or similarly an inexpensive calculator like a Casio fx-115 ES plus
n = 28
... P(x = 26) = binompdf(28, .9, 26) = .2442
... P(x > 26) = 1- P(x ≤ 26)= 1 - binomcdf(28, .9, 26) = 1-.7848 = .2152
Important You are comfortable using Your Calculator.
Wish You the Best in your Studies.
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