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The annual per capita consumption of ice cream (in pounds) in the United States can be approximated by a normal distribution with a mean of 20.7 lbs and a standard deviation of 4.2 lbs.
A.) What proportion of the population consumes at most 10 lbs yearly?
B.) Frank estimates that 24% of the population eats more ice cream than he does. Find how much ice cream Frank eats per year.
C.) Between what two values does the middle 80% of the consumption lie?
In the graphical method, how do you know when a problem is infeasible, unbounded, or when it has multiple optimal solutions? Give a real-world example of when you could have an infeasible problem.
The lifetime of a light bulb is an Exponential RV with a mean of 800 hours. Let L represent the time (in hours) that one randomly selected light bulb will burn. What is the possibility the light bulb burns for more than 1000 hours.
The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..
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the irs will do a random sampling of tax returns filed in 2010. they are concerned about major fraud and have a new
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200 draws are made with replacement from a box of numbered tickets these tickets are labeled either -2 or 3. is it
A survey found that at most 40% of those surveyed planned to get more sleep. A sample of 300 people found that 140 of them plan to get more sleep. For alpha = 0.01, what is the critical value?
a manufacturing company wants to investigate the product coming out of two machines has a similar diameter or not. it
Use an appropriate 95 percent confidence interval to estimate the difference between the mean prices of the two brands of cd players. Do you think that the difference haspractical importance?
Second treatment had M = 52 with s^2 = 36. Do these data point to significant difference between two treatments? Use the two-tailed test with α = .05.
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