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 724 women shoppers revealed that 630 remained loyal to their favorite supermarket during the past year (i.e., did not switch stores). (a) Find a 95% confidence interval for p. (Round your answers to three decimal places.) lower limit       upper limit       (b) What is the margin of error based on a 95% confidence interval? (Round your answer to three decimal places.)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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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 724 women shoppers revealed that 630 remained loyal to their favorite supermarket during the past year (i.e., did not switch stores).


(a) Find a 95% confidence interval for p. (Round your answers to three decimal places.)
lower limit      
upper limit      


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