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Catherine Chao, Director of Marketing Research, needs a sample of Kansas City households to participate in...

Catherine Chao, Director of Marketing Research, needs a sample of Kansas City households to participate in the testing of a new toothpaste package. If 40% of the households in Kansas City prefer the new package, the probability that Catherine's random sample of 300 households will have a sample proportion between 0.35 and 0.45 is ___________.

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Solution Given that, P=0,40, 1-p=0.60 ,1=300 Up = | PCI-P) – 5 040 yo6° = 002828 Mp = P=0.40 P(0.35 < X <0.45) =P 0.02828 - Pthank you

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