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At the height of the great recession of 2002, an average of 120 people arrived each hour at the Cambridge location for the Massachusetts unemployment office. To complete the process of applying for unemployment compensation, the applicant must go through three stations. Each station has a single person working at it. The service times at each station are exponentially distributed. The mean times required to complete the process at each station are:
Station 1: 20 secondsStation 2: 15 secondsStation 3: 12 seconds
How many people, on average, will present in the office applying for uncmployment compensation?
These plot yields followed approximately a normal distribution with mean 88 lb and SD 7 lb. Find the probability that any one randomly selected plot yield is greater than 90 lb.
Compute the test statistic. Use the t distribution table to compute a range for the p value. What is the rejection rule using the critical value? What is the conclusion?
What is the minimum possible time required for completing the project and what is the latest possible time that Activity D may be started without delaying the completion of the project?
suppose 20 of the people in a city prefer pepsi cola as their soft drink of choice. if a random sample of six people
spencer motors sells automobiles and trucks. the firm makes a 280 profit for each automobile it sells and a 375 profit
in conducting a survey what do you think is even more important than the size of the sample?
Several samples of size 56 are randomly selected and means computed. What value would you expect to determine for standard deviation of all these sample means?
1.college students average 8.6 hours of sleep per night with a standard deviation of 35 minutes. if the amount of sleep
identify a peer-reviewed journal article health based published in the last 5 years that uses the poisson distribution.
certain kinds of tumors tend to recur. the following data represent the lengths of time in months for a tumor to
Obvious tests In many cases, hypothesis testing is used when the evidence is obvious. For example, why would you even bother testing if the true mean is 50 ppm?
The student newspaper on our campus was interested in binge drinking. For their article, they surveyed 50 fraternity members, and found they drink more than 5 drinks an average of 7 times per month.
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