Market surveys are held, to estimate the proportion of housewives who recognize brand name cleaners based on the shape and color of the packaging.

Market surveys are held, to estimate the proportion of housewives who recognize brand name cleaners based on the shape and color of the packaging. From a sample of 1,400 housewives, 420 of them show the name of the merel.

a. Think of the population value of the population proportion

b. Use a 99% confidence interval for the proportion of the population.

c. Interpret your findings ..