19. Fast Food You wish to estimate, with 90% confidence, the population proportion of U.S. adults who eat fast food four to six times per week. Your estimate must be accurate within 3% of the population proportion.(a) No preliminary estimate is available. Find the minimum sample size needed.(b) Find the minimum sample size needed, using a prior study that found that 11% of U.S. adults eat fast food four to six times per week.(c) Compare the results from parts (a) and (b).21. In Exercise 11, does it seem possible that the population proportion could equal 0.59? Explain.23. In Exercise 17(b), would a sample size of 200 be acceptable? Explain.