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The monthly income of residents of Dayton is normally distributed with a mean of $3000 and a standard deviation of $500.
Define the random variable in words.
The mayor of Dayton makes $2,250 a month. What percentage of Dayton residents has incomes that are more than the mayor's?
Individuals with incomes of less than $1,985 per month are exempt from city taxes. What percentage of residents is exempt from city taxes?
What are the minimum and the maximum incomes of the middle 95% of the residents?
Two hundred residents have incomes of at least $4,440 per month. What is the population of Dayton?
How should the candidate purchase the five commercials to maximize the estimated number of additional voters?
Dr. Richmond, a psychologist, is studying the daytime television viewing habits of college students.
The probability is 1 in 4,000,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 50,000 trips. (a) What is the probability of a fatal accident over a lifetime? Describe your re..
Mean and standard deviation are 584.6 and 34.28
Conduct the following test using 95% level of confidence.
Draw a normal probability plot for residuals using excel or Minitab. Do the residuals seem normally distributed? If yes, why?
Sampling variability refers to the idea that different samples will include different individuals
Explain what these terms mean in describing the distribution of the sales reps' salaries.
You have been given a report that presents two regression models with different numbers of independent variables. You do not have the data so you cannot re computed regression models. Nevertheless, you have been asked to find out which model is b..
A new improved rocket launching system is being considered for short-range assault rockets. The requirement is that 80% of the rockets shall strike the target area at 800 meters. A sample of 36 experimental launches is made with 29 striking the ta..
Write a statistical laboratory report using the guidelines in the assigned article, "How to Write a Statistical Report."
Evaluate z statistic for the Wilcoxon rank sum test, standard deviation for the Wilcoxon rank sum test and P-value for the Wilcoxon rank sum test
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