(a) State the null and alternative hypotheses and (b) state whether the test of hypothesis will be a two-tailed test, a right-tailed test, or a left-tailed test.
Assume a study revealed that from a sample of 80 working women in a metropolitan area, 30 were over the age of 60. Do these data dispute a claim made prior to the study that the true proportion of working women over the age of 60 in the metropolitan area is no more than 0.18?