In the wild, monkeys eat an average of 28 bananas a day with a standard deviation of 2 bananas. One

Discussion in 'Calculator Requests' started by math_celebrity, Jul 22, 2020.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    In the wild, monkeys eat an average of 28 bananas a day with a standard deviation of 2 bananas. One monkey eats only 21 bananas. What is the z-score for this monkey? Is the number of bananas the monkey eats unusually low?

    Using our z-score calculator, we get:
    Z < -3.5
    P(Z < -3.5) = 0.499767

    Also, this is unusually low as it's more than 3 deviations away from the mean
     

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