Catherine Chao, Director of Marketing Research, Is Evaluating Consumer Acceptance

Multiple Choice

Catherine Chao, Director of Marketing Research, is evaluating consumer acceptance of a new toothpaste package.She randomly selects a sample of 200 households.Forty households prefer the new package to all other package designs.The 90% confidence interval for the population proportion is _________.

A) 0.199 to 0.201
B) 0.153 to 0.247
C) 0.164 to 0.236
D) 0.145 to 0.255
E) 0.185 to 0.275