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At the emergency room of Providence General Hospital entering patients initially go through a registration process that takes 3 minutes on average. When his or her turn comes, the patient is seen by a doctor and is either given detailed instructions for further care of the injury or illness, written prescription, or admitted to the hospital. Time with the doctor averages 8 minutes for those given prescriptions, 12 minutes for those given detailed instructions, and 30 minutes for those admitted to the hospital. Historically about 10% of patients are admitted to the hospital, 20% are given detailed instructions, and the remainder receive prescriptions (60%). On average about 70 patients per hour arrive at the emergency room. An average of 10 people are waiting to be registered at any time, and 40 are registered but waiting to see a doctor. Assuming that the average inflow rate is equal to the average outflow rate (the system is stable)
a) On average, how long does a patient spend in the ER?
b) On average, how many patients are being examined by doctors?
c) On average, how many patients are there in the ER?
Positive sales means positive net earnings for any business, sales have no effect on net revenues and insufficient sales can lead to net losses for some businesses.
Comparison of two energy drinks with an additional subject. Refer to the previous exercise. Let's suppose that there is an additional subject who expresses.
Determine the 95% confidence interval, assuming that sigma is unknown, list each in proper (lower bound, upper bound) notation.
Use the traditional method to test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected.
What is the expected number of children who get his or her own coat?
What is the correct answer to Suppose you were trying to decide which of two machines to purchase. Furthermore, suppose the length to which the machines cut a particular product part was important.
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To qualify for security officers training, recruits are tested for stress tolerance. The scores are normally distributed with a mean of 62 and a standard deviation of 8. If only the top 15% of recruits are selected, find the cut-off score. What is..
So the regression equation is and Predict profit if the Advertising is $6
Let Z be a standard normal random variable. Use the calculator provided, or this table, to determine the value of c such that
1. Nausea from affix sickness wanting to establish the randomly gives either its 2OO passengers. affects some travelers. A drug compare, effectiveness of its motion sickness pill, pill or a look-alike sugar pill (placebo) to
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