problemset2 - taking the ACT test? Round your final answer...

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PAM 210 Lecture 1 Spring 2008 Instructor: Salam Abdus Problem Set #2 Posted: 4 th February, 2008 Due: 11 th February, 2008 Circle all of your final answers. Put your name and your section number at the top. #1) Test scores are distributed N(533, 115). a) What proportion of the students received score at least 500? Round your value of z up to two decimal places and then use Table A. Round your final answer up to four decimal places. b) What proportion of the students received scores between 400 and 620? Round your values of z up to two decimal places and then use Table A. Round your final answer up to four decimal places. #2) ACT scores are distributed normally with a mean μ = 28 and a standard deviation σ = 4.8. How high must a student score in order to place in the top 20% of students
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Unformatted text preview: taking the ACT test? Round your final answer to two decimal places. #3) The mean of a distribution x is 11 and the standard deviation of x is 7. The distribution x is linearly transformed such that x new = 6x. What is the mean of x new ? What is the standard deviation of x new ? #4) The mean of a distribution x is 10 and the standard deviation of x is 4. The distribution x is linearly transformed such that x new = a + bx. The mean of x new is 35 and standard deviation of x new is 12. Suppose b is a positive number. What does a equal? What does b equal? From book: 1.98 Explicitly give Tonyas standardized score, rounded to two decimal places. Explicitly give Jermaines standardized score, rounded to two decimal places....
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This note was uploaded on 09/23/2008 for the course PAM 2100 taught by Professor Abdus,s. during the Spring '08 term at Cornell University (Engineering School).

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