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Tests on a certain battery have determined that the mean (average) time until failure is 40 hours. Assume that the time T until failure of the battery is exponentially distributed. Show all work
What is the probability that the battery will fail within 40 hours?
What is the probability that the battery will still be working after 80 hours?
A uniform probability distribution is a continuous probability distribution where the probability that the random variable assumes a value in any interval of equal length is.
If you want to provide a warranty so that only 2% of CD player will be replaced before the warranty expires, what is the time length of the warranty? c) What is p67?
suppose that the distribution of net typing rate in words per minute wpm for experienced typists can be approximated by
given two original random variables x and y suppose that we modify one of them by adding a constant w a x. how does
Amalgamated Fruits, Vegetables, and Legumes, an agricultural company, breeds the experimental fruit "kiwana." The company is studying the effects of a new fertilizer on the number of kiwanas per bunch grown on kiwana trees. The regression analysis be..
in a study the data you collect is status of disease infection.in a study the data you collect is favorite type of
At α = .01, did yellow fire trucks have a considerably lower accident rate? Determine sample proportions and z test statistic.
1. Provide a description of one method for estimating the reliability and one method for substantiating the validity of a test. 2. Discuss the conditions under which each method is appropriate and/or inappropriate.
let x be the discrete r.v. with the following probability distribution.a calculate ex.b calculate micro.c calculate
This sample group has errors with a standard deviation of 54.7ft. At the 5% level of significance, test that the new population has errors with a standard deviation equal to 43.7ft.
What is the probability that he or she is a Coalition voter (rounded to 3 decimal places)?
the computer-science aptitude score x and the achievement score y measured by a comprehensive final were measured for
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