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Students in a statistics class at a large state university were given a survey in which one question asked was age (in years); one student was a retired person, and her age was an "outlier". What does an "outlier" mean? If student height is measured, would this same retired person necessarily have a value that was an "outlier"? Explain.
A bond analyst is analyzing the interest rates for equivalent municipal bonds issued by two different states.
A certain airplane has 2 independent alternators to provide electrical power. The probability that a given alternator will fail on a 1 hour flight is 0.02. What is the probability that (a) both will fail? (b) Neither will fail? (c) One or the othe..
In an article entitled "Fuel Economy Calculations to Be Altered," James R. Healey indicated that the government planned to change how it calculates fuel economy for new cars and trucks.
You are the production manager of a company. Parachutes are woven in your factory using a synthetic fiber purchased from one of four different suppliers. The most important outcome for parachutes is strength of the fabric.
Multiple choice questions based on multiple regression - Find the coefficient of determination for the above model
The accounting department at Weston Materials, Inc., national manufacturer of unattached garages, reports that it takes two construction workers mean of 32 hours and standard deviation of 2 hours to erect the Red Barn model.
Compute the relative frequencies and percentages for all classes. Draw a histogram and a polygon for the relative frequency distribution.
If we assume that the lifetime of this type of bulb has a standard deviation of 400 hours, can we conclude at the 5% significance level that the claim is true.
To find the equation of the line of the best fit
A survey taken in a restaurant shows the following number of cups of coffee consumed with each meal. Construct an ungrouped frequency distribution.
To determine whether there exists mean difference among the groups:
Assume that the length X in minutes of a regular season NBA game is normally Distributed with X~N (µ X , σ 2 X );
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