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Question: The figure for this exercise is a boxplot comparing tip percentages for a male and a female restaurant server, each of whom drew happy faces on the checks of randomly selected dining parties. A dotplot of the data was given as the figure for Exercise 2.39. Discuss the ways in which the tip percentages for the two servers differed.
Exercise: In an experiment, one female and one male restaurant server drew happy faces on the checks of randomly chosen dining parties. The figure for this exercise is a dotplot comparing tip percentages for the female (n = 22 checks) to the tip percentages for the male (n = 23 checks).
a. Compare the two servers with respect to the approximate centers (locations) of their tip percentages.
b. Compare the two servers with respect to the variation (spread) among tip percentages.
c. Explain whether you think there are any outliers in the dataset or not. If you think there are outliers, give their approximate values.
Fitting a straight line to a set of data yields the following prediction line: i=2+5xi
A developer who specializes in summer cottage properties is considering purchasing a large tract of land adjoining a lake. The current owner of the tract has already subdivided the land into separate building lots and has prepared the lots by remo..
A. Determine the regression equation. B. Determine the estimated sales if 40 contacts are made.
Describe the sampling distribution model of this mean.
the driving distance for the top 100 golfers on the pga touris between 284.7 and 310.6 yards. assume that the driving
Given the set A = {1, 2, 3} and the set S = {(x, y) | x and y in A}. Consider the relation ≤ defined on S as follows: ((x1, y1) ≤ (x2, y2) if x1 ≤ x2 and y1 ≤ y2. Draw the directed graph of this relation. Show that it is a partial order. Explain why ..
A company knows that approximately 3 out of every 1000 processors that it manufactures are defective. What is the probability that out of the next 20 processors selected (at random):
Find the probability that no calls come in a given 1 minute period.
a panel of economists provided forecasts of the u.s. economy for the first six months of 2007 the wall street journal
Use the formula and put-call parity to compute put and call prices for 3-month European options, on a stock selling now for 100 with a strike price of 110, 100 and 90 respectively.
the following are the numbers of defective parts produced in a shift by 10 workers before and after going through a
Give the estimate of mean and variance of population distribution of weekly wintertime Breckenridge snowfall using sample.
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