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QUESTION

I need to be able to compute this on an Excel spreadsheet. Binomial Distribution and Poisson Tables GUESSING-NO KNOWLEDGE A.

I need to be able to compute this on an Excel spreadsheet.

Binomial Distribution and Poisson Tables

GUESSING-NO KNOWLEDGE

A.) A student takes a 20 question multiple choice exam and guesses on each question. Each question has four choices. What is the probability of getting exactly 8 correct out of the 20 questions?

B.) A student takes a 20 question multiple choice exam and guesses on each question. Each question has four choices. What is the probability of getting AT LEAST 8 correct out of the 20 questions?

SOME KNOWLEDGE (KNOWS 50% of the questions):

C.) A student takes a 20 question multiple choice exam and guesses on each question. Each question has four choices. What is the probability of getting exactly 18 correct out of the 20 questions?

D.) A student takes a 20 question multiple choice exam and guesses on each question. Each question has four choices. What is the probability of getting AT LEAST 18 correct out of the 20 questions?