Catherine Chao, Director of Marketing Research, needs a sample of Ottawa households to participate in the testing of a new toothpaste package.If 40% of the households in Ottawa prefer the new package, the probability that Catherine's random sample of 300 households will have a sample proportion greater than 45% is ___.
A)0.9232
B)0.0768
C)0.4616
D)0.0384
E)0.8974

Question

Quizplus · Accepted Answer

The Answer of Catherine Chao, Director of Marketing Research, needs a sample of Ottawa households to participate in the testing of a new toothpaste package.If 40% of the households in Ottawa prefer the new package, the probability that Catherine's random sample of 300 households will have a sample proportion greater than 45% is ___.
A)0.9232
B)0.0768
C)0.4616
D)0.0384
E)0.8974

Catherine Chao, Director of Marketing Research, Needs a Sample of Ottawa