For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. In a marketing survey, a random sample of992supermarket shoppers revealed that268always stock up on an item when they find that item at a real bargain price.(a) Letprepresent the proportion of all supermarket shoppers who always stock up on an item when they find a real bargain.Find a point estimate forp. (Enter a number. Round your answer to four decimal places.) (b) Find a 95% confidence interval forp. (For each answer, enter a number. Round your answers to three decimal places.) lower limit upper limit

What is the margin of error based on a 95% confidence interval? (Enter a number. Round your answer to three decimal places.)