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Suppose the distribution of speed at one location on a highway is bell shaped with a mean of 73 mph and a standard deviation of 4 mph. About 95% of vehicles at that location travel between
A) 65 and 81 mph
b) 69 and 77 mph
c) 61 and 85 mph
d) 72.6 and 73.4 mph
Prepare an x-bar chart and R-chart that reflect a 99.7% confidence level in order to answer questions 15 through 20:
Suppose that the data in Table represent approximate distribution of blood type frequency in percentage of total population.
the z-score for a particular number x is -1.25 where the values have a mean of 175.0 and a standard deviation of 12.0.
the random variable x the time to failure in thousands of miles driven of the signal lights on an automobile has a
The following table is partial probability distribution for the MRA Company's projected profits ( x= profit in $1000s ) for the first year of operation x f(x) -100 .10 0 .20
Show that there is a (non-Hausdorff) topology on a set X of two points for which the Baire and Borel σ-algebras are different.
questionthe table below gives two samples selected from 10 supermarkets of the weekly sales of a popular soft drink.
the data shows the list and selling prices for homes. find regression equation letting the list price be independent x
What is the relationship between confidence intervals and hypothesis testing? How are they the same? How are they different?
a machine has 9 identical components that function independently. the probability that a component will fail is 0.2.
What is the probability that 30 or more paid by credit? d. What is the probability that less than 12 paid by credit? e. What is the probability that 12 to 30 paid by credit?
The probability density of a one-parameter Weibull distribution is given by r2αxe-αx2 , x > 0 f(x) = 0, otherwise. (a) Using a random sample of size n, obtain a moment estimator for α.
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