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An underwriter of home insurance policies studies the problem of home fires resulting from wood-burning furnaces. Of all homes having such furnaces, 30% own a type 1 furnace, 25% a type 2 furnace, 15% a type 3, and 30% other types. Over 3 years, 5% of type 1 furnaces, 3% of type 2, 2% of type 3, and 4% of other types have resulted in fires. If a fire occurs in a particular home, what is the probability that a type 1 furnace is in the home?
1. for a standard normal model find the z-value that is less than the mean and for which 67 of the area under the
Describe a study you might design that could use the Chi Square statistic. What are the variables? What are the null and alternative hypotheses? Why would the Chi Square test be appropriate for this design?
Statistics is a very powerful topic that is used on a daily basis in many situations. For example, you may be interested in the age of the men who attend Silver's Gym. You could not assume that all men are the same age. Thus, it would be an inaccu..
It is estimated that 2% of the athletes competing in a large tournament are users of an illegal drug to enhance performance. The test for this drug is 95% accurate. What is the probability that an athlete who tests positive is actually a user?
in a recent survey ten percent of the homes in montana were found to own a miley cyrus action figure. in a sample of
Vote in favor of ABC in the elections. Derive a 95 % confi dence interval for the mean proportion of voters in Sile who will vote for ABC in the coming elections.
Find the proportion of employees who are managers and have MBA degrees.
use the given sample data to test the claim that p1 gt p2. use a significance level of 0.01sample 1sample 2n1 85n2
For a normal probability distribution, about 95 percent of the area under normal curve is within plus and minus two standard deviations of the mean and practically all (99.73 percent) of the area.
salaries for various positions can vary significantly depending on whether the company is in the public or private
a fair die is thrown until the sum of the results of the throws exceeds 6. the random variable x is the number of
two independent observations are selected randomly from a standard normal distribution. the probability that their
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