In a chi-square test of a contingency table, the value of the ...

[hbsimmons88]

In a chi-square test of a contingency table, the value of the test statistic was 2 = 12.678, and the critical value at  = 0.025 was 14.4494. Thus:
 
  A) we don't have enough evidence to accept or reject the null hypothesis at  = 0.025.
  B) we should decrease the level of significance in order to reject the null hypothesis.
  C) we fail to reject the null hypothesis at  = 0.025.
  D) we reject the null hypothesis at  = 0.025.

Question 2

A perfect straight line sloping downward would produce a covariance value of -1.
 
  Indicate whether the statement is true or false

[duke02]

Answer to Question 1

C

Answer to Question 2

FALSE