4. A manufacturer of pencils is choosing between two pencil making machines. Mac
ID: 3350200 • Letter: 4
Question
4. A manufacturer of pencils is choosing between two pencil making machines. Machine A produces pencils which have a mean length of 6 inches and a standard deviation of 0.1 inch while machine B produces pencils which have a mean length of 6 inches and a standard deviation of 0.4 inch. Which machine should the manufacturer choose and why?
5. Find the mean and standard deviation for the stock prices of each company. Describe the type of investor who should consider buying Orange Computer instead of General Car’s stock.
Orange General Car
Computer Company
Stock Price Stock Price
40 40
42 39
38 40
52 43
36 43
40 45
48 46
50 50
Explanation / Answer
Solution:-
4) The manufacturer shoukd choose Machine A, although both machine produces the same mean length but the standard deviation of Machine A is less than standard deviation of Machine B.
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