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8-3 Mike Dreskin manages a large Los Angeles movie theater complex called Cinema I, II, III, and IV. Each of the four auditoriums plays a different film; the schedule is set so that starting times are staggered to avoid the large crowds that would occur if all four movies started at the same time. The theater has a single ticket booth and a cashier who can maintain an average service rate of 225 movie patrons per hour. Service times are assumed to follow an exponential distribution. Arrivals on a typically active day are Poisson distributed and average 210 per hour. To determine the efficiency of the current ticket operation, Mike wishes to examine several queue operating characteristics.a. Find the average number of moviegoers waiting in line to purchase a ticket.b. What percentage of the time is the cashier busy?c. What is the average time that a customer spends in the system?d. What is the average time spent waiting in line to get to the ticket window?e. What is the probability that there are two or more people in the system?f. What is the probability that there are more than four people in the system?g. What is the probability that there is no one in the system?h. What are two things Mike could to reduce the time to get a ticket?
problem1 1. using if filter the data for these students into a column which contains the heights of only female
Research Scenario in which z-score is valuable
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..
Problem 1. An internet service provider (ISP) provides internet connections to 100,000 customers. 10,000 of the customers have high-speed connections and 90,000 of the customers have low-speed connections. The ISP wants to know whether, on the ..
6. Bay Area Community College (BACC) has collected data comparing the starting salaries of their graduating students with last names beginning with the letters A through M with those whose last names begin with N through Z. The first category,..
You are expected to complete a project related to inferential statistics - show that the random variable X is exponential and compute the probability of the wait time when it is greater
1. first carefully check for any typing mistakes in the data.for example i noticed the birth year for some students as
Calculate the variance-covariance matrix of the OLS estimator of β1.β2 and β3 and verify that:
The test statistic was calculated
Beanie Babies are toy stuffed animals that have become valuable collector's items. Beanie World Magazine provided the information on 50 Beanie Babies given in beanie.xls.
Test the hypothesis that there is not relationship between the proneness to use excessive force score and the force score for officers trained at Academy A.
A study done by the Ohio State University Medical Center examined whether or not taking an aspirin a day would help colon cancer patients reduce the chance of getting subsequent colon polyps. 635 patients with colon cancer participated; 317 of ..
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