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Three vendors have vegetable stands in a row. Customers arrive at the stands 1, 2, and 3 at rates 10, 8, and 6. A customer visiting stand 1 buys something and leaves with probability 1/2 or visits stand 2 with probability 1/2. A customer visiting stand 3 buys something and leaves with probability 7/10 or visits stand 2 with probability 3/10. A customer visiting stand 2 buys something and leaves with probability 4/10 or visits stands 1 or 3 with probability 3/10 each. Suppose that the service rates at the three stands are large enough so that a stationary distribution exists. At what rate do the three stands make sales. To check your answer note that since each entering customers buys exactly once the three rates must add up to 10 C 8 C 6 D 24.
A marketing research analyst collects data for a random sample of 100 customers out of the 400 who purchased a particular "coupon special".
with any statistical model we assess the fit. does the model accurately depict the truth? explain how standard
the national mean annual salary for a school administrator is 90000 a year. a school official took a sample of 25
Suppose that highway gas mileage rates for both of these cares are uniformly distributed over a range of 20 to 30 mpg. What proportion of these cars would fall into the 22 to 27 mpg range? Compute the proportion of cars that get more than 28 m..
What is your null hypothesis? What is your alternative hypothesis? What your decision about the null hypothesis?
If the speed of lights is 3.00x 10 to the power of 8 m/sec, how long does it take light to travel 2.29x 10 to the power of 11 m, the distance from the sun to Mars? Round to one decimal place.
Specify the appropriate null and alternative hypotheses if we wish to test the research hypothesis that the mean GHQ score for all employed men exceeds 10.
Conduct an ANOVA comparing anxiety levels (at post test only) of participants across all three treatments, conduct post hoc test if needed.
At the .05 level of significance, is there evidence of a difference in variability in the shipping time between the two outlets? What decision should the carpet manufacturer make? Please provide step by step solution.
in the last quarter of 2007 a group of 64 mutual funds had a mean return of 4.8 with a standard deviation of 5.5. if
Let (X,Y) have uniform distribution on the four points (-1,0), (0,1), (0,-1), (1,0). Show that X and Y are uncorrelated but not independent.
If a popcorn kernel is randomly selected, what is the probability that it takes between 130 seconds to 170 seconds for the kernel to pop?
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