A statistically significant difference with the z test means that ...

[swpotter12]

A statistically significant difference with the z test means that _____ .
 
  a. the population mean is larger than the hypothesized sample value
  b. the alpha level was higher than expected by chance alone
   c. the sample mean comes from a population with a mean different from the
  hypothesized population value
  d. the alpha level was lower than expected by chance alone
  Information; p 167, E, 2

Question 2

If you obtained a standard score on a history test expressed as z= 0.0 and a standard
  score on a mathematics test of z= -0.5, then you did _____ .
 
  a. relatively better on the math test
   b. relatively better on the history test
  c. better than average on both tests
  d. worse than average on both tests

[Koolkid240]

Answer to Question 1

C

Answer to Question 2

B

[swpotter12]

TYSM

[hollysheppard095]

Excellent