Res341 Exam Essay

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11) If a population distribution is skewed to the right, then given a random sample from that population, one would expect that the A. median is greater than the mean B. mode is equal to the mean C. median is less than the mean D. median is equal to the mean 12) Textbook Price Number of Textbooks $25 to $35 2 $35 to $45 16 $45 to $55 5 $55 to $65 7 $65 to $75 20 Estimate the standard deviation of the price of a textbook. A. 14.03 B. 33.85 C. 196.78 D. 729.00 13) Textbook Price Number of Textbooks $25 to $34.99 2 $35 to $44.99 16 $45 to $54.99 5 $55 to $64.99 7 $65 to $74.99 20 Estimate the mean price of a textbook. A. $554.00 B. $11.08 C. $60.00 D. $55.40 14) A supermarket has determined that daily demand for eggs has a bell-shaped distribution, with a mean of 55 cartons and a standard deviation of six cartons. If the supermarket begins each morning with a stock of 61 cartons of eggs, approximately what percentage of days will there be a surplus of eggs? A. 16% B. 18% C. 68% D. 84% 15) Which of these measurement scales has a rank order associated with its use? A. Ratio B. Ordinal C. Nominal D. Likert 16) Identify the scale that has no meaningful zero. A. Nominal B. Ordinal C. Interval D. Ratio 17) __________ is a measure of the chance that an uncertain event will occur. A. Random experiment B. Sample space C. Probability D. A complement 18) The Information Commons in the main library has 150 personal computers. The probability that any of them will require repair on a given day is 0.02. To find the probability that 25 of the computers will require repair, one would use what type of probability distribution? A. Binomial B. Poisson C.

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