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For the most recent year available the mean annual cost to attend a private university in the US was $26,889. Assume the distribution of annual costs follows a normal probability distribution and the standard deviation is $4,500. 95% of all students at private universities pay less than what amount?
Assume that Los Arboles had a special program in place to encourage helmet use. Elucidate to what extent did removal of the outlier improve the fit.
How many jackets should the store owner order if she wants to maximize her expected profit?
For this same sample of n = 45, find out the width of confidence interval around population mean? Illustrate all work.
Not take SRS of 25 students who took test. What are the mean and standard deviation of sample mean score xbar of these 25 students?
A researcher was interested in determining whether incentives affect the response rate in surveys. A simple random sample of 50 adult residents of a large city was selected. All were mailed a survey and promised a check upon returning a completed ..
Given the following data on hotel check-ins for a 6-month period:
Developing a linear programming problem using Commuter Bus scheduling to minimize the total cost.
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
In this table, my research is about the average amount of money people expect to spend on attomeys when they are injured. Is there a difference, depending on type of injury? Do people expect to spend more when the injury happened in a car, on job,..
A quality control engineer is interested in the mean length of sheet insulation being cut automatically by machine. The desired length of the insulation is 12 feet. It is known that the standard deviation in the cutting length is 0.15 feet. A sam..
Determine the probability that their SAT scores will differ by more than 50 points?
If the standard deviation of the amount of coffee dispensed is 0.4oz and the amount of coffee dispensed is normally distributed.
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