Discussion:
Q: For each of the following, (a) indicate what two populations are being compared, (b) state the research hypothesis, (c) state the null hypothesis, and (d) say whether you should use a one-tailed or two-tailed test and why.
(i) Do Canadian children whose parents are librarians do better than Canadian children in general on reading ability?
(ii) Is the level of income for residents of a particular city different from the level of income for people in the region?
(iii) Do people who have experienced an earthquake have more or less self-confidence than the general population?
(iv) Based on anthropological reports in which the status of women is scored on a 10-point scale, the mean and standard deviation across many cultures are known. A new culture is found in which there is an unusual family arrangement. The status of women is also rated in this culture. Do cultures with this kind of unusual family arrangement provide higher status to women than cultures in general?