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standard deviation

/in /by

Question

Specifications for a part for DVD player state that the part should weight between 24.9 and 25.9 ounces. The

pricess that produces the parts has a mean of $25.4 once and a standard deviation of 0.22 ounce. The distribution of output is normal.

a.What percent pf Parts will not meet the weigt specs? (Round the “z”value and final answer to 2 decimal places. Omit the % sign in your response

B.Within what values will 99.74 percent of sample means of this process falls if sample of n=12 are taken and the process is in control (random?)(round your answers to 2 decimal places

 
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