Question 1
Find the indicated percentage for the normally distributed variable. Round your answer to two decimal places, if necessary.
The diameters of bolts produced by a certain machine are normally distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than
0.32 inches?
◦ 95%
◦ 50%
◦ 2.28%
◦ 97.72%
Question 2
Find the indicated percentage for the normally distributed variable. Round your answer to two decimal places, if necessary.
The volumes of soda in quart soda bottles are normally distributed with a mean of 32 ounces and a standard deviation of 1.2 ounces. What percentage of soda bottles will have a volume less than
31.46 ounces?
◦ 67.36%
◦ 32.64%
◦ 36.24%
◦ 68%