Suppose the U. S. president wants an estimate of the proportion of the population who support his current policy toward revision
s in the health care system. The president wants the estimate to be within .04 of the true proportion. Assume a 95 percent level of confidence. The president’s political advisors estimated the proportion supporting the current policy to be .60. a. How large of a sample is required? b. How large of a sample would be necessary if no estimate were available for the proportion supporting current policy?
