2300_Midterm_examples

2300_Midterm_examples - Midterm examples 1) If a coin is...

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Midterm examples 1) If a coin is tossed three times and a statistician predicts that the probability of obtaining three heads in a row is 0.125, which of the following assumptions is irrelevant to his prediction? a. The events are dependent b. The events are independent c. The coin is unbiased d. All of the above assumptions are relevant to his prediction 2) In a grouped frequency distribution, the intervals should be what? a. Mutually exclusive b. Exhaustive c. Both A and B d. Neither A nor B 3) In right-skewed distributions, which of the following is the correct statement? a. The distance from Q1 to Q2 is larger than the distance from Q2 to Q3. b. The distance from Q1 to Q2 is smaller than the distance from Q2 to Q3. c. The arithmetic mean is smaller than the median. d. The mode is larger than the arithmetic mean. 4) The variance of a binomial distribution for which n = 100 and p = 0.20 is: a. 100 b. 80 c. 20 d. 16 5) Two events A and B are said to mutually exclusive if: a. P(A|B) = 1
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This note was uploaded on 06/15/2008 for the course ADMS 2320 taught by Professor Rochon during the Spring '08 term at York University.

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2300_Midterm_examples - Midterm examples 1) If a coin is...

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