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Three different heat-treatment methods are being tested against four different zinc-coating techniques, with data representing the number of pounds required for a test probe to penetrate the layer of zinc coating.
Metal samples have been randomly assigned to the factor levels, with two replications in each cell. For the data shown here, use the 0.01 level of significance in drawing conclusions from this experiment.
Determine the 95% confidence interval for the population mean for each factor level.
Describe the circumstances under which you should use ANOVA instead of t tests, and explain why t tests are inappropriate in these circumstances. Find a peer-reviewed article that reflects these circumstances, describe the research conducted (i.e...
Avalon Bakery would like you to recommend how many loaves of its rye bread to bake at the beginning of each day. Each loaf costs the bakery $3.00 and can be sold for $6.00.
kasandra associates provides executive coaching services to fortune 100 senior executives. her team charges 190 per
Number of rescue calls received by rescue squad in city follows a Poisson distribution with mu = 2.83 per day. Squad can handle at most four calls a day. Determine the probability that squad will be able to handle all calls on a particular day?
q1. in a study of the effects of stress on illness a researcher tallied the number of colds people contracted during a
A survey on the drinking habits of Americans estimated the percentage of adults across the country who drink beer, wine, or hard liquor at least occasionally. Of the 1516 adults interviewed, 985 said that they drank.
A population is normally distributed with the mean of 100 and a standard deviation of Would it be unusual for mean of sample of 3 to be 115 or more? Why or why not?
Specify the type (categorical, ordinal, quantitative) for each of the following variables recorded in a survey of telephone usage in student households:- Telephone exchange (first three numbers after area code).
1.according to a recent survey 275 of 400 middle-aged americans said they used the internet regularly. 140 of 400
Assume that each of 2000 individuals living near a nuclear power plant is exposed to particles of a certain kind of radi- ation at the rate of one per week. Suppose that each hit by a particle is harmless with probability 1 - 10-5 and produc..
If there are 70 people in the class, what is the probability that I win the bet?
A nurse reports for duty at the beginning of one of the 2-hour periods and works 8 consecutive hours (which is required in the nurses' contract). Dr. Becker wants to determine a nursing schedule that will meet the hospital's minimum requirement t..
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