10-1)

Specifications for a part for a DVD player state that the part should weigh between 24.4 and 25.4 ounces. The process that produces the parts has a mean of 24.9 ounces and a standard deviation of .24 ounce. The distribution of output is normal. Use Table-A.

a.	What percentage of parts will not meet the weight specs? (Round your "z" value and final answer to 2 decimal places. Omit the "%" sign in your response.)

Percentage of parts

%

b.	Within what values will 95.44 percent of sample means of this process fall, if samples of n = 7 are taken and the process is in control (random)? (Round your answers to 2 decimal places.)

Lower value , Upper value