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A sample of 500 students revealed that their annual incomes were normally distributed with a mean income of $30,000and a standard deviation of $3,000. What is the income that separates the top 25% from the lower 75% of the incomes?
Carryout the ANOVA and, if essential, post-hoc comparisons. Conduct a graph to represent group differences, and interpret ANOVA in a paragraph written in APA style.
Formulate this statement as a multiple regression model (form only, without parameter estimation).
Standard deviation of 1.8 years, and the distribution is approximately normal. if an employee is picked at random, what is the probability that the employee has worked at the store for over 10 years?
As a part of a class project, your statistics instructor asks you to weigh a sample of 100 items from a shipment of 500. You are testing the null hypothesis that the mean is greater or equal to 10 lbs.
The stakeholders in the simulation have different opinions as to the proper course of action the organization should take. Explain the decisions you made in the third cycle of the simulation.
What is the predicted GPA if a person watches 12 hours of television per week?
Use descriptive statistics to summarize the data from the two studies. What are your preliminary observations about the depression scores?
Heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 3 inches.
If it has an emergency locator, what is the probability that it will not be discovered? If it does not have an emergency locator, what is the probability that it will be discovered?
Develop a hypothesis to investigate this problem based on the claim of the heat pump manufacturer
Any state auto insurance company took a random sample of 370 insurance claims paid out during a 1-year period. the average claim was $750 with a standard deviation of $150. find .99 confidence interval for the mean claim payment.
A coin was flipped twenty times and landed heads fifteen times. Based upon this information, answer the following the question:
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