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A bag contains 10 balls numbered from 0 to 9. the balls are such that the person picking a ball out of the bag is equally likely to pick anyone of them. A person picked a ball and replaced it in the bag after noting its number. He repeated this process 2 more times. What is the probability that the ball picked first is numbered higher than the ball picked second and the ball picked second is numbered higher than the ball picked third?
Based on interviews with 81 SARS patients, researchers found that the mean incubation period was5 days, with a standard deviation of 15.7 days. Based on this information construct a 95% confidence interval for the mean incubation period of SA..
Firebrick Tire Company wants to increase sales of its long running, low-end Roadmaster Tire brand with anew advertising campaign promoting they will last at least 28,000 miles [Mu=28,000 miles]. Tests with arandom sample [n=30 tires] show a sample m..
Calculate the standard deviation for the sample mean
Tutor O-rama claims that their services will raise student SAT math scores at least 50 points. The average score on the math portion of the SAT is μ = 350 and σ = 35. The 100 students who completed the tutoring program had an average score of 385 poi..
Given a normally distributed variable (x), if you know that for a value of x = 244 the z-score = 2.20, what is the probability of any x value being above 244?
What are the two independent variables in this study? What is the dependent variable? 2.Why is a two-way between-subjects factorial ANOVA the correct statistic to use for this research design?
A delivery truck manager takes a sample of 25 delivery trucks and calculates the sample mean and sample standard deviation for the cost of operation. He asks an employee to construct a 95% confidence interval for the population mean. The employee fin..
What are the key issues in health care right now? How is research used-or how could it be used-in each of these areas by health care organizations?
The Webster National Bank is reviewing its service charges and interest-paying policies on checking accounts. The average daily balance on personal checking accounts is $850, with a standard deviation of $150. In addition, the average daily ba..
Identify any challenges you have in setting up a linear programming problem in Excel, and solving it with Solver. Explain exactly what the challenges are and why they are challenging. Identify resources that can help you with that.
if you were constructing a 99% confidence interval of the population mean based on a sample of n= 20 where the standard deviation of the sample s= 0.05 the critical value of t will be
We test if the mean rent of all downtown Pittsburgh one bedroom apartments is different from the mean rent of all non-downtown one bedroom apartments by examining a random sample of downtown one-bedroom apartments and a random sample of non-downtown ..
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