Answer the following statement(s) true (T) or false (F)
1. Chi-squared tests are always non-directional.
2. Counts occurring at all possible combinations of two variables can be expressed using a contingency table.
3. The following is a valid null hypothesis: There is a difference between observed and expected frequencies of gum preference.
4. The following is a valid alternative hypothesis: : Gum preference is not independent of gender.
5. All chi-squared distributions are similar to the normal distribution.
1.true
2.true
3.false
4.true
5.false
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