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The average American male wears a size 10 shoe and spends 4 hours a year tying a tie. The average American female college student owns 3.5 pairs of jeans. The average American laughs 15 times daily, swallows 215 aspirin tablets a year, and has a dog weighing 32 pounds.
a. Select one of these estimates. How do you suppose it was derived?
b. What sampling method would you use to update each of these statistics? What problems would you anticipate?
c. Could a census be used?
d. Are the populations finite or infinite?
At the .05 level, you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a 1 or 2 tail test?
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? Compute the value of the test statistic.
Calculate the expected number of days it takes to get the order and standard deviation.
Draw the graph of the regression line on the same plot as the scatter diagram above.
Calculate a standard error for the sample mean production rate for the new method and what is the standard error of the $1600 estimate?
What is the null and alternative hypothesis? What is your final conclusion?
In multi-choice test, each question has four options. Students wil get 10 points for each correct answer; lose four points for each incorrect answer; and receive no points for unanswered questions.
Solution utilizing graphical method. Compute the following linear programming problem. Among which of the following points (X, Y) is not a feasible corner point.
Determine the mean and the standard deviation of the sample.
The Wilcoxon signed rank test is computed for the data and gives a value W + = 161.5. Using the Normal approximation (without the continuity correction) the P-value.
The time it takes a student to finish a electronics test has a uniform distribution between 50 and 70 minutes.
A farmer in South Carolina must decide which crop to plant next year on his land: corn, peanuts, or soybeans. The return from each crop will be determined by whether a new trade bill with Russia passes the Senate.
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