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Water at 20C exits a circular tap moving straight down with a flow rate of 10.5 cm^3/s a) If the diameter of the tap is 1.20cm, what is the speed of the water coming out of the tap? b) As the fluid falls from the tap , the stream of water narrows. Find the new diameter of the stream at a point 7.50 cm below the tap. Assume that the stream still has a circular cross section and neglect any effects of drag forcess acting on the water. c) If turbulent flows are characterized by Reynolds numbers above 2300 or so, how far does the water have to fall before it becomes turbulent.
correlation between the two variables.a store manager wishes to find out whether there is a relationship between the
Can the college conclude that the students in the new program are significantly different from the rest of the freshman class? Use a two-tailed test with .05.
micron technology has sales offices located in four cities dallas seattle boston and los angeles. an analysis of the
a sample of 9 days over the past six months showed that a dentist treated the following numbers of
At the .05 significance level, can we conclude that the guideline is still reasonable?
A parameter is a population characteristic. The numerical value of a parameter usually cannot be determined because we cannot measure all units in the population. We have to estimate the parameter using sample information.
An advertising agency that serves a major radio station wants to estimate the mean amount of time that the station's audience spends listening to the radio daily. From past studies, the standard deviation is estimated as 45 minutes.
Standard deviations for first- and second-time and confidence interval
a television station estimates that 60 of college studentswatch the super bowl. for a sample of 240 students selected
find the standard normal curve area that liesa. to the left of z0.27b. between z1.69 and
Explain why comparing children whose parents chose a Montessori school with children of other parents would not show whether Montessori schools perform better than other programs?
the initial research proposal will consist of the following six 6 items1.identify a business research topic2.define the
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