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Suppose your friend in given problem arranged for three more cars, labeled the 9 cars A-I, changed a to .05, and conducted the "quiet" test. The results are shown in the accompanying table. Perform a Mann-Whitney U test and write a conclusion.
Car
Company Y ranks
Company Z ranks
B
1
H
3
I
2
A
5
F
4
G
7
C
6
E
8
D
9
Problem A friend of yours is trying to convince a mutual friend that the ride is quieter in an automobile built by [Toyota or Honda (you choose)] than one built by [Honda or Toyota (no choice this time; you had just 1 degree of freedom-once the first choice was made, the second was determined)]. This friend has arranged to borrow six fairly new cars-three made by each company-and to drive your blindfolded mutual friend around in the six cars (labeled A-F) until a stable ranking for quietness is achieved. So convinced is your friend that he insists on adopting a = .01, "so that only the recalcitrant will not be convinced.
As the statistician in the group, you decide that a Mann-Whitney U test is appropriate. However, being the type who thinks through the statistics before gathering experimental data, you look at the appropriate subtable in Table H and find that the experiment, as designed, is doomed to retain the null hypothesis. Write an explanation of why the experiment must be redesigned.
amoung all auto shops in san antonio a claim is made that the mean time needed to rotate the tires on a car is 16
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Construct a 95% confidence interval for the proportion of all those who experience some type of discomfort.
the 2003 statistical abstract of the united states reported the percentage of people 18 years of age and older who
What is the null hypothesis? What is your decision if a = 0.01?
R for my statistics class and need to write the code for this problem: "An experiment with four treatments and five replications of each treatment, which requires 20 experimental units. How many randomizations are possible for this experiment?..
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Give the 90% confidence interval for the mean score in the population of all young women.
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Would you play this game if you wanted to make money? What do we expert the value of the results of the game to be?
Having completed your Graduate Degree from Cambridge, you have just got a job at a small investment advisory firm. Your firm recommends investment funds to Self-Managed Super Fund (SMSF) clients based on their risk and return characteristics.
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