1/5 - .20 of getting any particular problem correct.Let X equal the number of questions out of the 20 questions that John gets correct. Do the calculations below using R. a.What type of probability distribution does X have? O Poisson O Bernoulli O negative binomial O geometric O binomial O normal b. What is the probability that X - 6? (i.e. exactly 6 questions correct) c. What is the probability that X s 6?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A psychology quiz consists of 20 multiple chice questions with five possible answers for each question. A student, say John, is totally unprepared so randomly guesses the answer to each question. This means that John has a probability of
1/5 = .20 of getting any particular problem correct.Let X equal the number of questions out of the 20 questions that John gets correct. Do the calculations below using R.
a.What type of probability distribution does X have?
O Poisson
O Bernoulli
O negative binomial
O geometric
O binomial
O normal
b. What is the probability that X = 6? (i.e. exactly 6 questions correct)
c. What is the probability that Xs 6?
Transcribed Image Text:A psychology quiz consists of 20 multiple chice questions with five possible answers for each question. A student, say John, is totally unprepared so randomly guesses the answer to each question. This means that John has a probability of 1/5 = .20 of getting any particular problem correct.Let X equal the number of questions out of the 20 questions that John gets correct. Do the calculations below using R. a.What type of probability distribution does X have? O Poisson O Bernoulli O negative binomial O geometric O binomial O normal b. What is the probability that X = 6? (i.e. exactly 6 questions correct) c. What is the probability that Xs 6?
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