1. You've developed a new apti

timer Asked: Nov 16th, 2015

Question description

1. You've developed a new aptitude test, which you've named the Scholastic Math And Reading Test (SMART). You gave your test to a population of consisting of all the high school seniors in a small rural community. This population had a mean of 77.25 and a standard deviation 12.81. a. One student took the SMART and received an 87. Calculate her z-score. (Report to two decimal places.) b. You'd like to be able to compare scores on the SMART with another standardized aptitude tests--the ACT. In order to do this, we need to transform the SMART distribution so that it has the same mean and standard deviation as the ACT. The ACT has a mean of 20 and standard deviation of 5. If a students scored an 87 on the SMART, what would her score be in the new, transformed distribution? (Report to one decimal place.) c. Suppose we transformed the ACT so that it had the same mean and standard deviation as the SMART. A 30 on the ACT is comparable to what score on the SMART? (Report to two decimal places.) d. Which score is better: an 18 on the ACT or a 70 on the SMART? Explain how you got your answer.

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