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Aeroplanes arrive at Chicago's O'Hare airport at the average rate of 5.5 per minute. Air traffic controllers can safely handle a maximum of seven planes per minute. What is the probability that airport safety is jeopardised? Planes arrive randomly and independently.
question in the poker game a hand is a set of 5 cards chosen randomly from a usual deck of 52 cards.a how many
Construct a 95 percent confidence interval for the difference in proportions for the two populations represented by these samples.
Both parties agree that if the average score in this year's survey is greater than one hundred and eight they will increase the police force. Is this decision rule adequate? What is the Type 1 error of this rule?
question the number of clients that go every hour to a bank agency is processed according the poisson distribution. we
NY is and the standard deviation is , then according to Chebyshev's theorem, the percentage of averages low temperatures in Rochester, NY between and is _____%>?
What is the probability that the variable will take the value 2? What is the mean of the distribution?
the central limit theorem can be used to analyze round-off error. suppose that the round-off error is represented as a
59% identify NASCAR as their favorite type of racing. Suppose four auto racing fans are randomly selected. What is the probability that all four have NASCAR as their favorite?
Find a 90% confidence interval for the difference between the proportion of men and the proportion of women who approved of Reagan's performance. What assumption do you make to use this method?
Population of following N=5 scores: 0,6,4,3, and 12. Calculate μ and σ for the population. Determine the z-score for each score in the population.
discuss how a t test for a dependent variable can be of great value in applying a new approach to the treatment of
Assuming that thedistribution has not changed from what it was in the past year, what is the probability that the mean blackness of the spots is less than 1.0?
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