1. Hypothesis testing
Example Questions

2. Example-1: Independent random sample of consumers were asked about satisfaction with their computer system in two slightly different ways. The options available for answer were the same in the two cases. When asked how satisfied they were with their computer system, 138 of 240 sample members opted for very satisfied. When asked how dissatisfied they were with their computer system, 128 of 240 sample members opted for very satisfied. Test at the 5% level against the one sided alternative, the null hypothesis that the two population proportions are equal.

3. Example-2: For a random sample of 125 British Entrepreneurs, the mean number of job changes was 1.91 and the sample standard deviation was For an independent random sample of 86 British Corporate Managers, the mean number of job changes was 0.21 and the sample standard deviation was Test the null hypothesis that the population means are equal against the alternative that the mean number of job changes is higher for British Entrepreneurs than for British Corporate Managers.