Question

Answer all of them please

3.

Suppose a study on the relationship between gender and political party included 200 men and 200 women and found 180 Democrats and 220 Republicans. Is that information sufficient for you to construct a contingency table for the study?

a.

Yes

b.

No

4.

For a chi-squared test statistic of 5.02, we would reject the null hypothesis.

Select one:

True

False

Answer 1

* Solution: - From the gilles information, we define two attributes A & B such that A = Gexer (male I female) 4 B: Democrats / Republicans. (Polytral porty) a) The gives information can be tabulated as A B Denscout Republican Total men 200. klomes 200 Total 180 220 400 Here only totals are given. In order to form a contingesly table at least one of the intersection values should be gives eg. men who are democrat or me who are republican etc. Hence given information is not sufficient to form a contingency table. (with this information we can find expected count but not the observed values). - Gives: - x² = 5.02 If we take x=0.05 the critical value is x²005 3.841 As X car > x, we reject Ho at 5). los. Herce gives statemet is true for a=0.05.