A Boring Time Jon Weideman, first shift foreman for Cut-Rate Machining, Inc., is attempting to decide which vendor from whom to purchase a drilling machine. He narrows his alternatives to four vendors: The Hole-Maker, Inc. (HM); Shafts & Slips, Inc. (SS); Judge's Jigs (JJ); and Drill For Bits, Inc. (DB). Each of these vendors is offering machines of similar capabilities at similar prices, so the effectiveness of the machines is the only selection criteria that Mr. Weideman can use. Mr. Weideman invites each vendor to ship one machine to his manufacturing facility in Richmond, Indiana for a test. He starts all four machines at 8:00 a.m. and allows them to warm up for two hours, at which point one of his employees will use each of the shipped machines to drill one hundred 3 inch diameter holes in 6 inch thick stainless steel sheets over a two hour period. The width of holes drilled with each machine are then measured and recorded. The results of Mr. Weideman's data collection are provided in the file Boring Time Data.xlxs. Based on these results, from which vendor would you suggest Mr. Weideman purchase his new machine?
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Case 1
A Boring Time
Jon Weideman, first shift foreman for Cut-Rate Machining, Inc., is attempting to decide
which vendor from whom to purchase a drilling machine. He narrows his alternatives to
four vendors: The Hole-Maker, Inc. (HM); Shafts & Slips, Inc. (SS); Judge's Jigs (JJ);
and Drill For Bits, Inc. (DB). Each of these vendors is offering machines of similar
capabilities at similar prices, so the effectiveness of the machines is the only selection
criteria that Mr. Weideman can use.
Mr. Weideman invites each vendor to ship one machine to his manufacturing facility in
Richmond, Indiana for a test. He starts all four machines at 8:00 a.m. and allows them
to warm up for two hours, at which point one of his employees will use each of the
shipped machines to drill one hundred 3 inch diameter holes in 6 inch thick stainless
steel sheets over a two hour period. The width of holes drilled with each machine are
then measured and recorded. The results of Mr. Weideman's data collection are
provided in the file Boring Time Data.xlxs. Based on these results, from which vendor
would you suggest Mr. Weideman purchase his new machine?
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