Question #350225

The average number of calories in a 1.5-ounce chocolate bar is 217. Suppose that the distribution of calories is approximately normal with standard deviation is 9. Find the probability that a randomly selected chocolate bar will have more than 190.




1
Expert's answer
2022-06-13T15:30:22-0400

P(X>190)=P(Z>190−2179)=P(Z>−3)=P(Z<3)=0.9987.P(X>190)=P(Z>\frac{190-217}{9})=P(Z>-3)=P(Z<3)=0.9987.


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