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Algebra

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Suppose that people's heights (in centimeters) are normally distributed, with a mean of 175 and a standard deviation of 6. We find the heights of 80 people.

(a) How many would you expect to be between 167 and 183 cm tall?


(b) How many would you expect to be taller than 170 cm?

  • Algebra -

    my trusty normal distribution calculator tells me that
    prob (between 167 and 183) = .8176
    prob( > 170) = .7977

    multiply each of those by 80

    http://davidmlane.com/normal.html

  • Algebra -

    Thank you so much for your response. Just to be clear are you saying I need to multiply .8176 x 80 and then .7977 x 80?

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