the weights of newborn elephants are normally distributed with a mean of 225 pou

Question

the weights of newborn elephants are normally distributed with a mean of 225 pounds and a standard deviation of 45 pounds. ) A zoo carefully monitors any newborn elephants born at their park.If a newborn elephant's weight falls in the bottom 5%, then the zoo takes special measures to ensure the health of the-little-guy or gal. Find the birth weight below which the zoo takes these precautions. Round your answer to the nearest pound. You must show your work using a calculator function to receive credit.

Explanation / Answer

here for 5th percentile value you can use invnorm function on ti-84

here 5th percentile =invnorm(0.05,0,1) =-1.6449

hence corresponding birth weight =mean +z*std deviation =225-1.6449*45=151 pounds

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