All bell-shaped curves _________. a. are normal curves c. are ...

[viki]

All bell-shaped curves _________.
 
  a. are normal curves c. are symmetrical
  b. have means = 0 d. a and c

Question 2

A distribution of raw scores is positively skewed. You want to transform it so that it is normally distributed. Your friend, who fancies herself a statistics whiz, advises you to transform the raw scores to z scores; that the z scores will be normally distributed. You should _________.
 
  a. ignore the advice because your friend flunked her last statistics test
  b. ignore the advice because z distributions have the same shape as the raw scores.
  c. take the advice because z distributions are always normally distributed
  d. take the advice because z distributions are usually normally distributed

[frogdreck123456]

Answer to Question 1

C

Answer to Question 2

B