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The average number of calories in a 1.5 ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with standard deviation =10. Find the probability that a randomly selected chocolate bar will have

a) Between 200 and 220 calories
b) Less than 200 calories

  • math -

    Time for one of my favourite wepsites

    http://davidmlane.com/normal.html

    just plug in

  • math -

    The average number of calories in a 1.5 ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with standard deviation =10. Find the probability that a randomly selected chocolate bar will have

    a) Between 200 and 220 calories
    b) Less than 200 calories

  • math -

    3023

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