STAT (29) - statistics PDF

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Each person who applies for an assembly job at Robert's Electronics is given a mechanical aptitude test. One part of the test involves assembling a plug-in unit based on numbered instructions. A sample of the length of time it took 42 persons to assemble the unit was organized into the following frequency distribution. L e n g th o f T im e ( in m in u te s ) 1 u p to 4 4 u p to 7 7 u p to 1 0 1 0 u p to 1 3 1 3 u p to 1 6 1 6 u p to 1 9

N um ber 4 8 14 9 5 2

What is the standard deviation (in minutes)? A) 3.89 B) 6.01 C) 8.78 D) 17.00 Answer: A The lengths of time (in minutes) several underwriters took to review applications for similar insurance coverage are: 50, 230, 52 and 57. What is the median length of time required to review an application? A) 54.5 B) 141.0 C) 97.25 D) 109.0 Answer: A A sample of the paramedical fees charged by clinics revealed these amounts: $55, $49, $50, $45, $52 and $55. What is the median charge? A) $47.50 B) $51.00 C) $52.00 D) $55.00 Answer: B...