Question

1. In certain areas AIDS-HIV epidemic may a concern. A sample of 176 people were examined for AIDS-HIV and 44 were found to be infected by AIDS-HIV. We will compute a 99 percent confidence interval for the proportion p of people who were infected by AIDS-HIV. Compute the margin of error e in estimating p at 99 percent level of confidence. Give the Margin of Error e, Left end point, Right end point, and the Conservative Margin of Error E:

MOE = e = LEP = REP = C − MOE = E =

2- You want to estimate the proportion p of defective light bulbs produced in a factory. Suppose you want to estimate p within .01 from the sample proportion X of defective items at 95 percent level of confidence. How large a sample would you take? (Round upward only.)

Required Sample Size n =

Answer 1