7.8 Let x be the number of courses for which a randomly selected student at a certain...

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7.8 Let x be the number of courses for which a randomly selected student at a certain university is registered.

The probability distribution of x appears in the following table:

x 1 2 3 4 5 6 7 p(x) .02 .03 .09 .25 .40 .16 .05

a. What is P(x 4)?

b. What is P(x 4)?

c. What is the probability that the selected student is taking at most five courses?

d. What is the probability that the selected student is taking at least five courses? more than five courses?

e. Calculate P(3 x 6) and P(3 x 6). Explain in words why these two probabilities are different.

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Introduction To Statistics And Data Analysis

ISBN: 9780840054906

4th Edition

Authors: Roxy Peck, Chris Olsen, Jay L. Devore

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Question Posted: Sep 11, 2024 05:01 AM

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7.8 Let x be the number of courses for which a randomly selected student at a certain...

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Introduction To Statistics And Data Analysis

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