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A database contains information on the wait times patients have reported in the emergency room to see a physician since the hospital opened 5 years ago. Suppose the wait times vary according to a normal distribution with mean wait time of 1.9 hours and a standard deviation of 0.7 hours. Based on a simple random sample of 23 patients at the hospital in the waiting room, what is the probability that they will have to wait for more than 2.5 hours?
zingos grocery store claims that customers spend an average of five minutes waiting for service at the stores deli
Your friend who works in ?nancial investment company comes to you with a problem. She is interested in estimating some parameter a from her data
Identify the value that corresponds to: (i) the point estimate and (ii) the margin of error for the following confidence interval: 4.9 ± 0.8.
At the end of the week, the scientists said that 18% of the 234 fish that were submitted for inspection displayed the discoloration. From this information, can the researchers estimate what proportion of fish in the river have discolored scales? E..
The data for the cats, you realize that if you now include data from one more cat, Redbeard, the mean whisker length of the cats becomes 10.514 cm. What was Redbeard's mean whisker length?
If Temployee Company receives 50 inquiries for temporary workers next week, how likely is it that the company will not have enough Microsoft Word-skilled people on hand?
Discuss at least three reasons why these predictions may not be accurate and offer three ways in which you can increase the likelihood of accurately predicting your customers' purchases.
Are the data sufficient to conclude that children with a history of childcare show significantly more behavioral problems than the average kindergarten child? Use a one-tailed test with a = .01.
a 15 msec wind at 101.3 kpa and 20 degrees celeus enter a two-bladed wind turbine with a diameter of 15 m. calculate
Flying over the western states with mountainous terrain in a small aircraft is 40% riskier than flying over similar distances in flatter portions of the nation. Find the probability of no accidents in 100,000 flight operations.
What are the elements of the risk-assessment paradigm? How can these elements be applied in a workplace setting in which an emergency responder is addressing a large spill of trichloroethylene? Describe how risk assessment can be used in industria..
How do I construct an example where I would be able to apply the concept of expected value to a problem (e.g. a financial investment problem would be a great way to demonstrate how various stocks in a portfolio produce a weighted average of the ov..
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