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Unformatted text preview: = 4.8. How high must a student score in order to place in the top 20% of students taking the ACT test (according to Table A)? Use a z-score that is actually listed in Table A. Round your answer to three decimal places. #3) The mean of x = 11 and the standard deviation of x = 7. The variable x is linearly transformed such that x new = 6 x . What is the mean of x new ? What is the standard deviation of x new ? #4) The mean of x = 10 and the standard deviation of x = 4. The variable x is linearly transformed such that x new = a + b x. The mean of x new = 35 and standard deviation of x new = 12. Suppose b is a positive number. What does a equal? What does b equal?...
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This note was uploaded on 10/17/2010 for the course PAM 2100 taught by Professor Lewis during the Spring '10 term at Adelphi.
- Spring '10