SOLUTION: If the weight of female police officers closely follows the normal distribution with a mean of 125 pounds and a standard deviation of 5 pounds, what range of weights includes the m
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Question 849424: If the weight of female police officers closely follows the normal distribution with a mean of 125 pounds and a standard deviation of 5 pounds, what range of weights includes the middle 80% of the female police force? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! If the weight of female police officers closely follows the normal distribution with a mean of 125 pounds and a standard deviation of 5 pounds, what range of weights includes the middle 80% of the female police force?
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Find the z-values that bracket 0.8 symetrically around the mean::
invNorm(0.10) = -1.2816 and invNorm(0.9) = +1.2816
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Find the corresponding weight values using wt = z*s + u
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Lower wt limit:: -1.2816*5 + 125 = 118.15 lbs
Upper wt limit:: +1.2816*5 + 125 = 131.41 lbs
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Cheers,
Stan H.
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