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A candy company distributes boxes of chocolates with a mixture of creams, toffees, and cordials. Suppose that the weight of each box is 1 kilogram, but the individual weights of the creams, toffees, and cordials vary from box to box. For a randomly selected box, let X and Y represent the weights of the creams and the toffees, respectively, and suppose that, the joint density function of these variables is
(a) Find the probability that in a given box the cordials account for more than 1/2 of the weight.
(b) Find the marginal density for the weight of the creams.
(c) Find the probability that the weight of the toffees in a box is less than 1/8 of a kilogram if it is known that creams constitute 3/4 of the weight.
There are three flight phases. At α = 0.05, is the cockpit noise level independent of flight phase?
Show the odds of any two individuals having the same birthday are slightly greater than 1:1 (1:.9732 actually).
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Construct upper and lower control limits for the x chart, using the given product parameters. (b) Plot the data on the control chart. (c) Is this process in control? Explain your reasoning.
Suppose that women's weights are normally distributed with the mean given by mu=143 lb and standard deviation given by sigma=29 lb.f 1 woman is arbitarily selected, determine the probability that her weight is below 113
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If the data were collected for a sample of 50 households rather than 100, develop an 85% confidence interval estimate of the population mean annual amount spent, assuming the population has a normal probability distribution.
Perform a 2-sample t-test to see if the population male and female average salaries could be equal to each other - Since the one and two sample t-test results provided different outcomes, which is the proper/correct apporach to comparing ..
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The average hourly wage last year for members of the hospital clerical staff in a large city was $6.32. The standard deviation of the population was $.54. This year a sample of 50 workers had an average hourly wage of $6.51. Test the claim at alph..
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