Multiple-Choice Section-20 Questions Suggested Pacing/Time to Complete: 20 Minut

Question

Multiple-Choice Section-20 Questions Suggested Pacing/Time to Complete: 20 Minutes correct.) moeamon this enam, you must get at least 75% of the The probability mass unction for a random varnable glves which of the following probabilities? d None of the above The acronym CDF, often denoted F), stands for? a. Central Deviation Function b Cumulative Distribution Function c Combination Development Function d. Iam going to get a C, D, or F on this exam (please don't circle this one) Which of the following is a measure to location? a Mean b. Expected value d. All of the above Which of the following could NOT be represented by a discrete random variable? a. The probability that the number of defects in a random sample of 100 parts is less than 10 b. The probability that the time between successive customers entering a store is less than 10 minutes The expected number of customers entering a store in the next hour The probability that at least 10 customers will visit a store without making a purchase before three customers visit the same store that actually do make purchases c. d. All of the following are discrete distributions except the a. Binomial b. Negative Binomial d. Normal

Explanation / Answer

1) P(X=x)

2) Cumulative Distribution Function

3) All, Mean, Expected value, E(X)

4) The probability that the time interval between successive customers entering the store is less than 10 minutes.

5) Normal Distribution is not Discrete distribution

6) Range is not a measure of location

7) All; Variance, Range and Standard deviation are measure of spread

8) Squaring Standard deviation gives Variance

9) It is the collection of random samples

10) Mutually exclusive event

11) They also could be independent.

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