Tuesday

October 21, 2014

October 21, 2014

Posted by **Peter** on Friday, January 9, 2009 at 11:42pm.

A. Convert Maria's midterm score of 84 to a standard z score.

which is correct?

a. 0.083

b. 0.5

c. 0.2

d. 1.2

e. 6

B Convert Zoe's midterm score of 89 to a standard z score.

a. 1.2

b. 0.5

c. 6

d. 0.917

e. 2.2

C. Who did better relative to her class?

a. Maria

b. Zoe

c. They performed the same.

d. Neither

e. Cannot determine

- AP Stats -
**Damon**, Saturday, January 10, 2009 at 5:26amI will do the Maria part, then you do the rest

Mean = 78

score = 84

score above mean = 84 - 78 = 6

sigma = 5

6/5 = 1.2 standard deviations above mean

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