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It was suggested that five is the minimum number of data points for the least likely cate gory in constructing histograms. In many cases, however, we must estimate probabilities that are extremely small or for which relatively few data are available. In the example about machine failures at the beginning of the chapter (pages 356-357), suppose that we had one day out of 260 in which three failures occurred. What do you think we should do in such a situation?
A company makes water pumps. The probability that a randomly selected pump is defective is equal to p. What is the probability that a sample of M pumps will contain exactly 3 defective items? Use Binomial distribution and Poisson distribution. Com..
a team has won 17 championships over the past 68 years. thus it may seem reasonable to assume that in a given year the
1 an open label study where participant are aware of the treatment they are taking is conducted to assess the time
Mmaximum error of estimate was 30. if he were to conduct a second study to reduce the maximum error of estimate to 6, about how many hard drives.
suppose that the reaction time sec to a certain stimulus is a continuous random variable with a density function given
the p-value for testing the hypoteheses h0 u 30 versus ha u gt 30 is 0.032.what is the p-value if the alternative is
the pulse rate per minute of adult males is normally distributed with a mean of 72 and a standard deviation of 12. if
a data set consists of 83 test scores. over a long period it has been found that the mean and standard deviation for
The data given below are taken from two independent samples collected randomly. What is the value of test statistics?
A student in statistics argues that the concepts of mutually exclusive events and independent events are really the same , and that if events are mutually exclusive they must be independent. Do you agree with this statement? Use the probability in..
Use a 0.05 significance level to test the claim of a cereal lobbyist that the mean for all cereals is less than 0.3g.
The means appear to be very close, but not the variances. (a) At α = .05, is there a difference in variances? (b) Show all steps clearly, including an illustration of the decision rule.
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