practice%20test%20ch7

# practice%20test%20ch7 - Practice Test Ch7 Directions Work...

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Chapter 7 Test 7A 1 Practice Test Ch7 AP Statistics Name: Directions: Work on these sheets. Part 1: Multiple Choice. Circle the letter corresponding to the best answer. 1. Suppose X is a random variable with mean μ. Suppose we observe X many times and keep track of the average of the observed values. The law of large numbers says that (a) The value of μ will get larger and larger as we observe X. (b) As we observe X more and more, this average and the value of μ will get larger and larger. (c) This average will get closer and closer to μ as we observe X more and more often. (d) As we observe X more and more, this average will get to be a larger and larger multiple of μ. (e) None of the above 2. In a population of students, the number of calculators owned is a random variable X with P(X = 0) = 0.2, P(X = 1) = 0.6, and P(X = 2) = 0.2. The mean of this probability distribution is (a) 0 (b) 2 (c) 1 (d) 0.5 (e) The answer cannot be computed from the information given. 3.

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## This note was uploaded on 05/01/2011 for the course AP CLASSES 101 taught by Professor Mr.smith during the Spring '11 term at Korea Advanced Institute of Science and Technology.

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practice%20test%20ch7 - Practice Test Ch7 Directions Work...

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