The monthly growth of the height of trees in montana has a

The monthly growth of the height of trees in Montana has a mean of 47.5" and a standard deviation of 11.6". Assume a normal probability distribution.

a) The monthly growth amount for any future month that has a 50 percent chance of being equaled or exceeded.

b) The monthly amount that has a 20 percent chance of being equaled or exceeded.

c) The probability that the growth in any month will be between 38 and 62 inches.

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The monthly growth of the height of trees in montana has a : the monthly growth of the height of trees in montana has a mean of 47.5 and a standard deviation of 11.6. assume a

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