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Telephone calls enter a college switchboard at a mean rate of two thirds of a call per minute according to a poisson process. Let X denote the waiting time until the tenth call arrives. What is the pdf of X? What are the moment generating function, mean , and variance of X?
Prepare a 95% confidence interval for the average grocery bill. Would a 99% confidence interval be narrower or wider than the 95% confidence interval?
Determine the dependent variable(s)? Determine the value of the statistic? Write down the name of one variable not mentioned in this study that one might wish to control for.
Assume that the heights of adult white men have a mean of 67.9 inches and a standard deviation of 2.8 inches. If 64 men are randomly selected, find the probability that they have a mean height greater than 68.9 inches.
A standard IQ test has mean of 98 and a standard deviation of 16. We want to be 99% certain that we are 8 IQ points of the true mean. Determine the sample size.
An airline owns an aging fleet of Boeing 737 jet airplanes. It is considering a major purchase of up to 17 new Boeing model 757 and 767 jets.
Find the midrange for the following group of data items: what is the midrange rounded to the nearest tenth?
An independent testing services road-tested 36 of the automobiles.
What proportion of children 10-15 years would be classified as hyperlipidemia(assume that hyperlipidemia is defined as a total cholesterol level over 200)?
MATH1550H: Assignment: Questions: Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.
A random sample of 60 days shows that the mean daily number of gallons sold is 10.00. What is the point estimate of the population mean?
I need to make a perfect positive linear correlation scatter diagram. Could you please outline this procedure so that I can continue to make other scatter diagrams
Discuss an example where you would use a test of hypothesis for in your professional life, personal life, education or politics. Provide sufficient details so that the context is clear and also discuss if the example involves:
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