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Question: The American League and the National League of Major League Baseball are each divided into three divisions: East, Central, and West. Many years, fans talk about some divisions being stronger (having better teams) than other divisions. This may have consequences for the postseason. For instance, in 2012 Tampa Bay won 90 games and did not play in the postseason, while Detroit won only 88 and did play in the postseason. This may have been an oddity, but is there good evidence that in the 2012 season, the American League divisions were significantly different in overall records? Use the following data to test whether the mean number of wins per team in the three American League divisions were the same or not. Note that the data are not balanced, as two divisions had five teams, while one had only four.
The annual report of Dennis Industries cited these primary earnings per common share. What is the arithmetic mean primary earnings per share of common stock and The variance?
The Boston Transit Authority wants to determine whether there is any need for changes in the frequency of service over certain bus routes.
The intensity and frequency of hurricanes increases by 2% over the historical projections and claims increase proportionately. Evaluate data using the appropriate test for significance. Rationale for using the test is clear.
In the Daily 3 game, three numbers between 0 and 9 will be drawn in succession (repetitions allowed). The player marks three numbers on a game card.
spasmodic dysphonia sd is an idiopathic chronic and disabling voice disorder. in a case-control study 150 cases of sd
A measurement systems experiment involving 20 parts, three operators, and two measurements per part is shown in the Table 8E.10. (a) Estimate the repeatability and reproducibility of the gauge.
we randomly choose letters one at a time without replacement from the word choose until both os have been obtained.
A certain type of light bulb that is used on a projector has a Weibull distribution with parameters α=2, and β=3. Compute the following: The probability that the bulb will last 6.
independent random samples of the scores of 10 daily quizzes from day students and 15 quizzes from evening students
If 3 or fewer are defective, the lot is accepted. Based upon their sampling plan, what is the probability that a lot of 10 percent defective will be accepted?
A group of day to day workers can work either 0 hours, eight hours or 12 hours at a pay rate of $9.75 per hour. (The 12 hour day pays regular time for the first eight hours and double time for the remaining four hours.
Is there any evidence to suggest the true proportion of companies that require this information is greater than 0.20? Use a = 0.01.
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