Question

Suppose X represents test scores with a mean of 80 and standard deviation 5.

14. Draw a picture of this distribution.

15. If Bob got a score of 85, what is his Z-score?

17. If Bob has a Z-score of 0, what was his test score? (What is his X value?)

Suppose the height of female OSU students has a normal distribution with mean 65 inches and standard deviation 2 inches.

34. If Polly is 64 inches tall, what % of female OSU students are shorter than her?

35. If Polly is 64 inches tall, what % are taller than Polly?

Answer 1

14)

  

If You use Normal table curve you can get P(0<Z<0.5) = 0.1915.