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 of 734 women shoppers
revealed that 626 remained loyal to their favorite supermarket
during the past year (i.e., did not switch stores).
(a) Let p represent the proportion of all women
shoppers who remain loyal to their favorite supermarket. Find a
point estimate for p. (Round your answer to four decimal
places.)
(b) Find a 95% confidence interval for p. (Round your
answers to three decimal places.)
lower limit | |
upper limit |
(c)What is the margin of error based on a 95% confidence
interval? (Round your answer to three decimal places.)
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