A Manager of a Dealer Center Wants to Know What

Multiple Choice

A manager of a dealer center wants to know what is the percentage of consumers who prefer sedan cars. He collects some information about selling cars in his city from several dealer centers. It appears that 47 consumers out of 142 prefer sedan cars. Estimate the proportion of consumers who prefer a sedan and calculate the margin of error with the confidence level of 95%.

A) The proportion of consumers who prefer sedan cars is 0.33, the margin of error is 0.065.
B) The proportion of consumers who prefer sedan cars is 0.47, the margin of error is 0.078.
C) The proportion of consumers who prefer sedan cars is 0.33, the margin of error is 0.078.
D) The proportion of consumers who prefer sedan cars is 0.33, the margin of error is 0.033.
E) The proportion of consumers who prefer sedan cars is 0.47, the margin of error is 0.040.