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Test 2!

# Test 2! - 1 The length of time a consumer waits for a...

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1. The length of time a consumer waits for a credit card authorization, is an example of a ___________ random variable. a. Continuous b. discrete 2. Which of the following concerning the probability distribution of a discrete random variable false? a. Each f(x)> 0 b. E f(x)= 1.0 c. E (x) =1.0 d. E (x) = E xf(x) 3. Point estimates based on simple random samples almost always differ somewhat from the corresponding population parameters. What do statisticians assume to be the main cause of these differences? 4. Which of the following is false concerning the normal distribution?

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5. Which of the following is true concerning the finite population correction factor? population is finite and the sample is a relatively large proportion of the population A simple random sample of traffic tickets issued over a 5 month period by the Port Allen Police Department is shown here: {94, 100, 85, 94, 92}
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Test 2! - 1 The length of time a consumer waits for a...

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