SOLUTION: It is estimated that on a professor’s statistics exam, four fifths of the students pass. Suppose a class has 43 students. What is the probability that at least 35 students pas

Algebra ->  Probability-and-statistics -> SOLUTION: It is estimated that on a professor’s statistics exam, four fifths of the students pass. Suppose a class has 43 students. What is the probability that at least 35 students pas      Log On


   

Question 1039511: It is estimated that on a professor’s statistics exam, four fifths of the students pass. Suppose a class has 43 students.
What is the probability that at least 35 students pass?

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P%28X%29=C%2843%2CX%29%2A%284%2F5%29%5EX%2A%281%2F5%29%5E%2843-X%29
I used EXCEL to generate the values.
.
.
.
.
.
.
.
The values in yellow signify the probabilities of 35-43 students passing,
The value in the green box is the sum of those probabilities.
P=0.5