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# Grades in a statistics course. North Carolina State University posts the

ISBN: 9780716774785 486

## Solution for problem 10.16 Chapter Chapter 10

The Basic Practice of Statistics | 4th Edition

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The Basic Practice of Statistics | 4th Edition

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Problem 10.16

Grades in a statistics course. North Carolina State University posts the gradedistributions for its courses online.4 Students in Statistics 302 in the Spring 2005semester received 45% As, 35% Bs, 16% Cs, 2% Ds, and 2% Fs. Choose aStatistics 302 student at random. To choose at random means to give everystudent the same chance to be chosen. The students grade on a four-point scale(with A = 4) is a discrete random variable X with this probability distribution:Value of X 01234Probability 0.02 0.02 0.16 0.35 0.45(a) Say in words what the meaning of P(X 3) is. What is this probability?(b) Write the event the student got a grade poorer than C in terms of values ofthe random variable X. What is the probability of this event?

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Conditional Probability: probability of an event, given that another event has occurred P(A| B) is the probability of A, given that B has occurred P(A| B) is not the same as P(B|A) If events are independent then P(A)=P(A|B) and P(B)=P(B|A) A contingency table (two way table) is a visual representation of the relationships between the variable. They make probabilities easier to figure out. Levels...

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##### ISBN: 9780716774785

Since the solution to 10.16 from Chapter 10 chapter was answered, more than 225 students have viewed the full step-by-step answer. The Basic Practice of Statistics was written by and is associated to the ISBN: 9780716774785. This textbook survival guide was created for the textbook: The Basic Practice of Statistics, edition: 4. The full step-by-step solution to problem: 10.16 from chapter: Chapter 10 was answered by , our top Statistics solution expert on 03/19/18, 03:36PM. This full solution covers the following key subjects: . This expansive textbook survival guide covers 28 chapters, and 1355 solutions. The answer to “Grades in a statistics course. North Carolina State University posts the gradedistributions for its courses online.4 Students in Statistics 302 in the Spring 2005semester received 45% As, 35% Bs, 16% Cs, 2% Ds, and 2% Fs. Choose aStatistics 302 student at random. To choose at random means to give everystudent the same chance to be chosen. The students grade on a four-point scale(with A = 4) is a discrete random variable X with this probability distribution:Value of X 01234Probability 0.02 0.02 0.16 0.35 0.45(a) Say in words what the meaning of P(X 3) is. What is this probability?(b) Write the event the student got a grade poorer than C in terms of values ofthe random variable X. What is the probability of this event?” is broken down into a number of easy to follow steps, and 124 words.

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