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Statistics / Elementary Statistics: A Step by Step Approach 8th ed. 8 / Chapter 5-2 / Problem 6

Elementary Statistics: A Step by Step Approach 8th ed. | 8th Edition | ISBN: 9780073386102 | Authors: Allan G Bluman Professor Emeritus

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Chapter 5, Problem 6

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QUESTION:

Traffic Accidents The county highway department recorded the following probabilities for the number of accidents per day on a certain freeway for one month. The number of accidents per day and their corresponding probabilities are shown. Find the mean, variance, and standard deviation. 1.3; 1.81; 1.35 Number of accidents X 0 1 2 3 4 Probability P(X) 0.4 0.2 0.2 0.1 0.1

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QUESTION:

Traffic Accidents The county highway department recorded the following probabilities for the number of accidents per day on a certain freeway for one month. The number of accidents per day and their corresponding probabilities are shown. Find the mean, variance, and standard deviation. 1.3; 1.81; 1.35 Number of accidents X 0 1 2 3 4 Probability P(X) 0.4 0.2 0.2 0.1 0.1

ANSWER:

Step 1 of 3

Traffic Accidents The county highway department recorded the following probabilities for the number of accidents per day on a certain freeway for one month. The number of accidents per day and their corresponding probabilities are shown.

We need to find the mean, variance, and standard deviation.

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