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The Acme Super light bulb is known to have a useful life described by the density function
f (t) = .01e-.01t ,
where time t is measured in hours. (a) Find the failure rate of this bulb
(b) Find the reliability of this bulb after 20 hours.
(c) Given that it lasts 20 hours, find the probability that the bulb lasts another 20 hours.
(d) Find the probability that the bulb burns out in the forty-first hour, given that it lasts 40 hours.
Explain the assignment model and how it is similar to a transportation problem. Give a real-world example of an assignment model to describe what is transported where.
Explain how you obtained a suitable sample of either qualitative or quantitative data - Review data for validity and reliability.
It has been reported that 80% of taxpayers who are audited by the Internal Revenue Service end up paying more money in taxes. Assume that auditors are randomly assigned to cases, and that one of the ways the IRS oversees its auditors is to monitor..
You have been research for your statistics class on how nervous the American adults are in general, you have decided to use HINTS 2007 data set that has a scale (going from 0 to 24)measuring the psychological distress of the respondents.
suppose a geyser has a mean time between eruptions of 76 minutes. let the interval of time between the eruptions be
prepare a box-and-whisker plot for the following data.11 8 26 31 62 19 7 3 14 7533 30 42 15 18 23 29 13 16 6does this
suppose a geyser has a mean time betwen eruptions of 83 minutes. let the interval of time between the erupitons be
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The regression equation is Y = 29.29 - 0.96X, the sample size is 8, and the standard error of the slope is 0.22. What is the critical value to test the significance of the slope at the 0.01 significance level?
iven an infinite population with a mean of 75 and a standard deviation of 12, the probability that the mean of a sample of 36 observations taken at random from this population exceeds 78 is?
ifteen watch springs are selected from the production line and measured; their weights are 8, 3, 4, 8, 1, 4, 4, 9, 9, 2, 8, 4, 9, 7, and 7 grams. Assume = 0.01.Determine which test statistic is appropriate (chi-square or F), and calculate its value..
a software developer is interested in finding what the best color theme should be for an engine diagnostic program for
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