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1. Using the hardness data from the odor data set odor .txt, do the following.
(a) Make a normal probability plot of the data.
(b) Do the data appear to be normally distributed? Explain.
2. Use the web site data webvisit .txt to do the following.
(a) Make a normal probability plot for the entire data set.
(b) Make normal probability plots for the two apparent groups in the data.
(c) Calculate the mean and standard deviation for each group.
(d) Assuming the group with the larger values is normally distributed, use your calculated mean and standard deviation to estimate the propor tion of days that have more than 15,300 visits.
(e) Write a paragraph describing this set of data and the conclusions you have drawn from it.
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You have just started your own Airline. You have one plane for a route connecting Austin, Boise, and Chicago. One route is Austin-Boise-Chicago and a second route is Chicago-Boise-Austin. How many other routes are possible?
suppose that x and y are independent random variables each coming from a geometric distribution with parameter p.a.
A manager of a supermarket estimated that 87% of customers use coupons in their grocery purchases. How large a sample is required to estimate the true proportion to within 0.01 with 98% confidence?
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If employee is chosen at random, determine the probability that employee is female and salaried staff? Choose the best answer from the following.
Based on this information, by what factor does the risk of having an accident increase due to driving while intoxicated?
the selection of a proper seller is critical to the success of a project. all of the below would be considered good
Hits on a personal web site occur quite infrequently. They occur randomly and independently with an average of five per week.
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