SOLUTION: A student randomly guesses at 10 multiple-choice questions. Find the probability that the student guesses exactly 3 correctly. Each multiple choice question has four possible answe

Algebra ->  Probability-and-statistics -> SOLUTION: A student randomly guesses at 10 multiple-choice questions. Find the probability that the student guesses exactly 3 correctly. Each multiple choice question has four possible answe      Log On


   



Question 1020268: A student randomly guesses at 10 multiple-choice questions. Find the probability that the student guesses exactly 3 correctly. Each multiple choice question has four possible answers with only one correct answer, and each question is independent of every other question.

How do i pick this question apart in terms of what to put where in my TI-83?

Found 2 solutions by Fombitz, ewatrrr:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Probability of correct : 1%2F4
Probability of incorrect : 3%2F4
Total questions : 10
Total correct :+3
P%283%29=C%2810%2C3%29%281%2F4%29%5E3%283%2F4%29%5E%2810-3%29
.
.
.
Sorry I use HP not TI.

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
TI syntax for P(x-value) is binompdf(n, p, x-value).
binompdf(10,.25, 3)