With the proliferation of data mining analysis due to scanner data with tens of thousands of records, online surveys that garner thousands of respondents, and other ways to capture very large samples, there is a very real danger of finding a great deal of statistical significance that is not meaningful. even if differences are statistically significant and meaningful, they do not necessarily need to be stable.

a. true
b. false

Precision dyes is analyzing two machines to determine which one it should purchase. the company requires a rate of return of 15 percent and uses straight-line depreciation to a zero book value over the life of its equipment. ignore bonus depreciation. machine a has a cost of $462,000, annual aftertax cash outflows of $46,200, and a four-year life. machine b costs $898,000, has annual aftertax cash outflows of $16,500, and has a seven-year life. whichever machine is purchased will be replaced at the end of its useful life. which machine should the company purchase and how much less is that machine's eac as compared to the other machine's

Carlos hears juan and rita’s complaints about the new employees with whom they have to work with, as well as their threats to quit the company. if carlos were to reassign juan and rita to new, unique roles and separate them from the ronny and bill, it would signal that carlos has moved into the stage of managing resistance.

Customers arrive at rich dunn's styling shop at a rate of 3 per hour, distributed in a poisson fashion. rich can perform an average of 5 haircuts per hour, according to a negative exponential distribution.a) the average number of customers waiting for haircuts= customersb) the average number of customers in the shop= customersc) the average time a customer waits until it is his or her turn= minutesd) the average time a customer spends in the shop= minutese) the percentage of time that rich is busy= percent