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At a downtown hospital in a mid-sized Canadian city, suppose the weekly number of emergency visits is normally distributed with a mean of 850 visits and a standard deviation of 260 visits. For the upcoming week, find the probability that the weekly number of emergency visits will be:
a. at least 800b. less than 700c. at most 900d. between 800 and 900 visits
at a large university it is known that 50 of the students live on campus. the director of student life is going to take
let x denote the length in minutes of a long-distance telephone conversation. assume that the density for x is given
a study looks at patients who were mechanically ventilated in the intensive care unit. the researchers found that of
(a) Show what happens if you use runs·9, .12, 14, and 15 to augment the first eight runs.
Considering only the forecasts for period 6-12, what is the lowest MAD value for any of the methods?
A study looked into the management of various tropical grasses for improved production, measured as dry matter yield in hundreds of pounds per acre over a 54-week study period.
suppose that x and y have a joint probability density function pdffx y kx 2y for 0 lt x lt 1 and 0 lt y lt 10
1) Construct the confidence interval for the population mean µ.
Is there evidence to conclude that statistics classes obtain a larger proportion of left-handed students? Test the claim at level of significance= 0.05
Two distinct even numbers are selected at random from the first ten even numbers greater than zero. What is the probability that the sum is exactly 30?
Compute the coefficient of variation for current account balances for male and female account holders.
test the research hypothesis at the .01 level
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