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Consumer Reports is doing an article comparing refrigerators in their next issue. Some of the characteristics to be included in the reports are the brand name and model; whether it has a top, bottom, or side-by-side freezer. the estimated energy consumption per year (kilowatts); whether or not it is Energy Star compliant; the width, depth, and height in inches, and both the freezer and refrigerator net capacity in cubic feet. Which of these variables are categorical and which are quantitative? Give the units for the quantitative variables and the categories for the categorical variables. What are the individuals in the report?
questiona patient is seen at a clinic. a recent epidemic in town shows that the probability that the patient suffers
Calculate the standard deviation of the number of available rooms in that sample. Construct a frequency distribution of the sample mean, and plot a histogram of this distribution.
Check that the formula (1) holds when X Unif(0, b). Formula (1) also works for b = 1. Check this when X is an Exponential RV with PDF f(x) = e-x for x 0.
The insurance company charges an annual rate of $250 for the collision coverage. What is the expected value of the collision policy holder?
Suppose that A makes a statement, and then D says that C says that B says that A was telling the truth. What is the probability that A was actually telling the truth?
A random sample of 35m of the firm's accountants has a mean workday of 8.2 hours with a standard deviation of 0.5 hour. At α = 0.01, can you support the CEO's claim?
Listed below are weights in grams from a sample of these bats. Construct a 95% confidence interval estimate of their mean weight.
If we assume that the errors made by rounding off are iid and have a uniform distribution over the interval ( - ~, ~), compute approximately the probability that the sum of the integers is within two units of the true sum.
Assume that preparation D was a placebo. Use the Scheffe's procedure to compare the average response of A, B, C, and E to the response for D.
The fill amount of bottle of soft drink has been found normally distribute with a mean of 2.0 liters and a standard deviation of 0.05 liters. If a random sample of bottles is selected, what is the probability that the sample mean will be between 1..
Which gives an expected value of: (0.10)($100) + (0.90)($10) = $19.00. Compute the expected value for the "Reject Christ" decision and pick the "best" choice to make.
In a class, the grade of a student on an exam is an RV with expectation 60 and variance 16. If the class average is between 55 and 65, with a probability greater than or equal to 0.9, determine the number of students that have taken the exam.
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