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Statistics / The Practice of Statistics 5 / Chapter 6 / Problem T6.9

The Practice of Statistics | 5th Edition | ISBN: 9781464108730 | Authors: Daren S. Starnes, Josh Tabor

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Section I: Multiple Choice Select the best answer for each question. The figure shows

Chapter 6, Problem T6.9

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QUESTION:

Section I: Multiple Choice Select the best answer for each question. The figure shows the probability distribution of a discrete random variable X. Note that the cursor is on the histogram bar representing a value of 6. Which of the following best describes this random variable? (a) Binomial with n = 8, p = 0.1 (b) Binomial with n = 8, p = 0.3 (c) Binomial with n = 8, p = 0.8 (d) Geometric with p = 0.1 (e) Geometric with p = 0.2

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QUESTION:

Section I: Multiple Choice Select the best answer for each question. The figure shows the probability distribution of a discrete random variable X. Note that the cursor is on the histogram bar representing a value of 6. Which of the following best describes this random variable? (a) Binomial with n = 8, p = 0.1 (b) Binomial with n = 8, p = 0.3 (c) Binomial with n = 8, p = 0.8 (d) Geometric with p = 0.1 (e) Geometric with p = 0.2

ANSWER:

Step 1 of 2

A geometric distribution has the highest bar in the histogram at and thus the distribution has to be a binomial distribution (not a geometric distribution).

The probability calculated in the output is:

with

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