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Two airplanes are flying in the same direction in adjacent parallel corridors.At time t=0,the first airplane is 10 km ahead of the second one.Suppose the speed of the first plane (km/hr)is normally distributed with mean 520 and standard deviation 10 and the second plane's speed is also normally distributed with mean and standard deviation 500and 10,respectively.
what is the probability that plane 2 did not catch up to plane one after two hours of flight?
If 37% of high school students said that they exercise regularly, find the probability that 5 randomly selected high school students will say that they exercise regularly.
How many participants would be required to ensure that a 95% confidence interval for the mean difference in the number of drinks is within two drinks of the true mean? Assumed that the standard deviation of the difference in the mean number of dri..
Let X be the number obtained on the blue die minus the number obtained on the red die. Draw a histogram for its probability function and a graph for its distribution function.
A certain component is critical to the operation of medical device and must be replaced immediately upon failure. If the mean lifetime of this type of component is 100 hours and its standard deviation is 30 hours, how many of these components must..
The Minneapolis Tribune ran an article on gender differences in shopping behavior. When 400 women were asked to respond to the question "Where I shop is influenced by which store has a greater variety," 60% answered "Yes.
The annual precipitation amounts in certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches.
Twelve case of leukemia are reported in people living in a particular census tract over a five year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cance-incidence rates?
Is there a significant difference between the scores between the Republicans and the Democrats?
What are three lessons learned relative ANOVA and Nonparametric tests? What concepts and analytic tools will you be able to use in your workplace ?
In a random sample of 225 students at a university, 180 stated that they were nonsmokers. Based on this sample, compute a 95% confidence interval for the proportion of all students at the university who are nonsmokers.
In standard normal distribution standard deviation is always ___.
Plot fitted values against residuals. Does this plot point out any problems with homoscedasticity?
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