Discussion:
Q1) A random sample of 1000 voters are classified as to whether they are in a low, medium, or high income bracket and whether they favor a new tax reform. The observed frequencies are presented in the table
What is the following probability? P(M'|A)
Q2) Indications are that the average age at which breast cancer is detected in women has been changing. In a study to compare the situation in Canada today with that of twenty years ago, independent random samples were obtained from federal government health records for each of 1978 and 1998 relating to women who had developed this disease. The following table summarizes the information collected about age at detection.
In performing the statistical test suggested in this question, a standard error must be estimated.
What is the estimated value of the standard error?
Q3) The results for random samples of international matches played between Canadian curlers and curlers from other countries were obtained for both male and female curlers. The information collected is summarized in the following table. [see attachment] In estimating the difference in the proportions of games one by male and female curlers, the 99% confidence interval could be expressed as (pM - pF) +/- E.
In this case, the quantity denoted E would have what value?
