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Q1) Use X2 goodness-of-fit test to test claim about population distribution. Interpret decision in context of the original claim.
Legal researcher is studying age distribution of juries by comparing them with overall age distribution of available jurors. Researcher claims that jury distribution is different from overall distribution; i.e., there is noticeable age bias in jury selection in this area. Table illustrates number of jurors at county court in 1 year and percent of persons residing in that county, by age. Use population distribution to determine expected juror frequencies. Test researcher's claim at a = 0.01.
21-29
30-39
40-49
50-59
60 and above
Jury
45
128
244
224
359
Population
20.5%
21.7%
18.1%
17.3%
22.4%
Ninety of the sample students are in the Business College, 120 are in the Liberal Arts College, and 90 are in the Education College.
What are the null and alternative hypotheses in this situation?
Developing project network using AOA that determines completion times.
Find out the probability
Carry out F test for significance of straight line regression of Y on X and interpret your results.
Develop a 99 percent confidence interval for the population proportion.
Labor negotiations estimate that 30 percent of all major contract negotiations result in a strike. During the next year, 12 major contracts must be negotiated. Determine the following probabilities.
A bank official reported the results of a regression analysis designed to predict the bank's charges (y), measured in dollars per month, for services rendered to local companies.
Categorize the following as discrete or continuous random variables.
Develop three regression models to predict the selling price based upon each of the other factors individually. Which of these is best?
Professor Cox needs a volunteer amongst 30 students in his statistical applications course. The average age of his students is 25 years, with the standard deviation of 3 years.
On randomly selected day, let X and Y, respectively, be proportions of time that the drive-in and walk-in facilities are in use. Determine the marginal density of X.
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