The serum cholesterol levels for men in one age group are normally distributed with a mean of 178.3 and a standard deviation of 40.6. All units are in mg/100 mL. Find the 9th percentile.
A) 123.9 mg/100mL B) 107.7 mg/100mL C) 161.7 mg/100mL D) 165.3 mg/100mL
Question 2
Suppose a brewery has a filling machine that fills 12-ounce bottles of beer. It is known that the amount of beer poured by this filling machine follows a normal distribution with a mean of 12.26 ounces and a standard deviation of 0.04 ounce.
The company is interested in reducing the amount of extra beer that is poured into the 12 ounce bottles. The company is seeking to identify the highest 1.5 of the fill amounts poured by this machine. For what fill amount are they searching? Round to the nearest thousandth.
A) 12.173 oz B) 11.913 oz C) 12.347 oz D) 12.087 oz
Trophic levels
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