# Week two practice worksheet 3 explain to a person who

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WEEK TWO PRACTICE WORKSHEET 3 Explain, to a person who has never had a course in statistics what you have done. 4. A researcher records the levels of attraction for various fashion models among college students. He finds that mean levels of attraction are much higher than the median and the mode for these data. a. What is the shape of the distribution for the data in this study? b. What measure of central tendency is most appropriate for describing these data? Why? 5. On a standard measure of hearing ability, the mean is 300, and the standard deviation is 20. Provide the Z scores for persons whose raw scores are 340, 310, and 260. Provide the raw
WEEK TWO PRACTICE WORKSHEET 4 scores for persons whose Z scores on this test are 2.4, 1.5, and -4.5.
WEEK TWO PRACTICE WORKSHEET 5 6. Using the unit normal table, find the proportion under the standard normal curve that lies in the tail for each of the follow useing table starting on page 673 (Hint: Remember to change all percents to decimals): a. Z = 1.00 b. Z = -1.05 c. Z = 0 d. Z = 2.80 e. Z = 1.96 7. Suppose the scores of architects on a particular creativity test are normally distributed. Using a normal curve table (pp. 673-676 of the text), what percentage of architects have Z scores a. above .10? b. below .10? c. above .20? d. below .20? e. above 1.10? f. below 1.10?
WEEK TWO PRACTICE WORKSHEET 6
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