# Binomial Probability

4 Questions

QUESTION 1 of 4

Hello Professor,

I need help with this question, "What is the probability that when making random guesses on a fifty question multiple choice exam, with four answer choices for each question, that you miss only thirty-five of the questions?"

QUESTION 2 of 4

Hello Professor,

Can you explain the process for the homework in 4.4 number 23 please?

I only get 30 Choose 15, but I dont know my p or my q.

Please help.

Thank you

QUESTION 3 of 4

Hi professor,

I got number #24 wrong in section 4.4. these are my numbers but I think they are mixed up ?

n=50

x=4

p=.35

q=.65

QUESTION 4 of 4

I'm kind of confused on how to approach these problems (when n is larger than 25 and you cannot use the binomial table)

Use the normal approximation to calculate the probability that P( x >= 17) for n = 30, p = 0.50 .