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Southwest airlines is studing the weight of luggage for each passenger for a arge group of domestic passangers, the mean is 47 pounds with a standard deviation of 10 pounds. for a large group of overseas passengers, the mean is 78 pounds and the standard deviation is 15 pounds. compute the relative dispersion of each group.
A baseball player hits 59 home runs during a season with 161 games. What is the empirical probability that the player would hit at least one home run during any given game of the season?
In the following example, why would Chebyshev's Theorem be used instead of the Empirical Rule?
Engineers want to design seats in commercial aircraft so that they are wide enough to fit 98% of all males. (Accommodating 100% of males would require very wide seats that would be too expensive.)
An alcohol awareness task force at Big-Ten university sampled 20 students after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying
The nicotine patch group had abstained from smoking, as 87 in the patch plus drug group. is this good evidence that adding bupropion increases the success rate?
Find the probability that a) an individual graduate will have a salary over $45000 and b) A group of nine graduates will have a group average over $45000.
Identify the point estimate of the average number of available hotel rooms in this lesson from each sample. Construct and Interpret a 95% confidence level for the true mean number of available hotel rooms, based on the point estimate of each sampl..
The sample mean of the sampling distribution of a statistic is 6 and the standard error of the statistic is 1.03. What is the probability that xbar > 7.52?
He is expected to satisfactorily service 10 patients per day at an hourly wage of $8. Which dental hygienist would be the better hire? Why?
Arrivals tend to follow the Poisson distribution, and service times are exponentially distributed. What is the probability that the shop is empty?
Let us suppose you have taken 100 samples of size 49 each from normally distributed population. Compute standard deviation of sample means if population's variance is 16. Area to left of ‘z' is 0.9976.
What would happen if the forest service agent took another sample of 31 trees? Would the slope change? Would the intercept change? What about a third sample of 31 trees?
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