To introduce her class to binomial distributions, Mrs. Desai gives a 10-item, multiple- choice quiz. The catch is, students must simply guess an answer (A through E) for each question. Mrs. Desai uses her computer's random number generator to produce the an- wer key, so that each possible answer has an equal chance to be chosen. Patti is one of the tudents in this class. Let X = the number of Patti's correct guesses. 1. Show that X is a binomial random variable. 2. Find P(X = 3). Explain what this result means. 3. To get a passing score on the quiz, a student must guess correctly at least 6 times. Vould you be surprised if Patti earned a passing score? Compute an appropriate probability to support your answer. %3D

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Use first picture's information to answer second picture information. Only answer sec

Refer to the previous Check Your Understanding (page 397) about Mrs. Desai's special
multiple-choice quiz on binomial distributions. We defined X
correct guesses.
the number of Patti's
1. Find ux. Interpret this value in context.
2. Find ox. Interpret this value in context.
3. What's the probability that the number of Patti's correct guesses is more than 2 standard
deviations above the mean? Show your method.
Transcribed Image Text:Refer to the previous Check Your Understanding (page 397) about Mrs. Desai's special multiple-choice quiz on binomial distributions. We defined X correct guesses. the number of Patti's 1. Find ux. Interpret this value in context. 2. Find ox. Interpret this value in context. 3. What's the probability that the number of Patti's correct guesses is more than 2 standard deviations above the mean? Show your method.
To introduce her class to binomial distributions, Mrs. Desai gives a 10-item, multiple-
choice quiz. The catch is, students must simply guess an answer (A through E) for each
question. Mrs. Desai uses her computer's random number generator to produce the an-
swer key, so that each possible answer has an equal chance to be chosen. Patti is one of the
students in this class. Let X = the number of Patti's correct guesses.
1. Show that X is a binomial random variable.
2. Find P(X = 3). Explain what this result means.
3. To get a passing score on the quiz, a student must guess correctly at least 6 times.
Would
you be surprised if Patti earned a passing score? Compute an appropriate
probability to support your answer.
Transcribed Image Text:To introduce her class to binomial distributions, Mrs. Desai gives a 10-item, multiple- choice quiz. The catch is, students must simply guess an answer (A through E) for each question. Mrs. Desai uses her computer's random number generator to produce the an- swer key, so that each possible answer has an equal chance to be chosen. Patti is one of the students in this class. Let X = the number of Patti's correct guesses. 1. Show that X is a binomial random variable. 2. Find P(X = 3). Explain what this result means. 3. To get a passing score on the quiz, a student must guess correctly at least 6 times. Would you be surprised if Patti earned a passing score? Compute an appropriate probability to support your answer.
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