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A government agency is putting a large projector out for low bid. Bids are expected from 10 different contractors and will have a normal distribution with a mean of $3.5 mil and a standard deviation of $250,000. Devise and implement a sampling experiment for estimating the distribution of the minimum bid and expected value of the minimum bid.
a foreman for an injection-molding firm admits that on 11 of his shifts he forgets to shut off the injection machine on
In the opening sections, we reported the result of an opinion poll of 100 undergraduate chemical engineering students in the United States: 75 of the students prefer "closed-book" exams to "opened-book" ones.
Perform a posthoc test that is suitable if we assume that group 7 is a control group and that the other are different treatment groups and that we are only interested in finding significant treatments, not to compare them.
sunitas job is to provide technical support to computer users. suppose the arrival of calls can be modeled by a poisson
What is the probability that: The amount requested is $80,000 or more?
In a random sample of 53 concrete specimens, the average porosity (in percent) was 21.6 and the standard deviation was 3.2. a) Find a 90% confidence interval for the mean porosity of specimens of this type of concrete.
Do the data demonstrate that the true mean photometer reading for the color density is significantly different from 12 at 3 percent level of significance?
question a company sells packets of biscuits that they claim on average contains at least 20 g biscuits in each
Identify a decision process within your work or business interests that could be resolved based on data.
I have been asked to suppose that faculty at my college are assigned overload courses hence additional compensation beyond the required contract hours based on seniority.
An epidemiologic study examined risk factors associated with pediatric AIDS. In a small study of 30 cases and 30 controls, a positive history of substance abuse occurred among 11 of the cases and 6 of the controls. Based on these data, can the inv..
The two cars drove a combined total of 1450 miles, and the sum of their fuel efficiencies was 40 miles per gallon. What were the fuel efficiencies of each of the cars that week?
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