The proportion of individuals insured by the All-Driver Automobile insurance Company who received at least one traffic ticket during a five-year period is 15. Use z-table.
a. Show the sampling distribution of p bar, if a random sample of 150 insured individuals is used
to estimate the proportion having received at least one ticket (4 decimals),-
E(p bar) =
Standard error of the proportion (sigma p bar) =
b. What is the probability that the sample proportion will be within +/- 03 of the population
proportion (3 decimals)? Round z value in intermediate calculations to 2 decimals,