Imagine a professor wants to examine if there is a relationshipbetween gender and performance on a writing test. Thirty girls andthirty boys participated in his experiment. They were given astandard writing test and their grades were given as “outstanding”,“good”, “passing”, and “failing”. If the professor decided to use aChi-square test to examine the relationship, how manydegrees of freedom are there in this Chi-square test?
When using the Chi-square test, the probability of TypeI error is____ its significance level.
a. Not related to Ă‚Â Ă‚Â
b. Bigger than
c. Equal to
b. Smaller than
If the probability value of a Chi square of 3.2 with adegree of freedom of 3 is 0.368, then we should___.
a. Fail to reject the null hypothesisĂ‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â
b. We cannot decide unless we get the information on t-value
c. Reject the null hypothesisĂ‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â Ă‚Â
d. We cannot decide unless we get the information on factors andlevels
