Design specification for a motor housing states that it should weigh between 24 and 25 kgs. The

Question:

Design specification for a motor housing states that it should weigh between 24 and 25 kgs. The process that produces the housing yields a mean of 24.5 kg and a standard deviation of .2 kg. The distribution of output is Normal.
a. What percentage of housings will trot meet the design specification?
b. Within what values should 95.44 percent of sample means of this process fall if samples of n = 16 are taken?

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