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The number of customers as a local McDonalds' drive-through is known to have a Poisson Distribution with an average of 2 customers every 5 minutes. (a) What is the probability in the next 30 minutes we see more than 10 customers? (b) What is the probability in the next 10 minutes we see less than 2 customers? (c) What is the probability if the drive though cashier takes a 5 minute break she will not leave any customers waiting? (d) What is the probability the drive through cashier serves more than 100 customers during her 8 hours shift. For this part please use excel and print out your results. Write onto your printout the exact excel code used.
martians play poker with a deck of 64 cards. there are 9 suits corresponding to the 9 planets mercury venus earth mars
There is an operator at the center who places 25 outgoing calls in a one-hour period. What is the probability that this operator will get live answers on 7 or more calls?
Mama's Stuffin' is a popular food item during the fall and winter months, but it is marginal in the spring and summer. Use the following demand forecasts and costs to determine which of the following production planning strategies is best for ..
A sample of 50 ads reveals a sample average of 5.1 weeks with a sample standard deviation of 2.3 weeks. State the null and alternative hypotheses and carry out the test at the 5% level of significance.
Number of avalanche fatalities The numbers of avalanche fatalities for the last nine seasons were reported as 1,1,1,5,5,5,5,8,10. Roughly what type of distribution is this? a. normal
The question is whether memebership in the aspirin group affects (lowers) the heart attack rate. Why is the question here different from the previous question? What would we expect to see if the two categories are independent?
A human resources director, on learning about the regression effect, decides to hire people who have been fired by their previous employer for poor performance.
run a regression of the dependent variable on the continous and categorical independent variables. what conclusion can
A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 95% confident that the sample mean is correct to within plus-or-minus $50 of the population mean.
For a random sample of 50 batteries, what is the probability that the sample mean will be less than 27.5 hours?
from the output below is it safe to assume that the sample data used to complete this test is from a normal
Portfolio B's yearly return is normally distributed with a mean of 0.04 and a standard deviation of 0.06. Based on this information, what is the probability that over the next year, the return on portfolio A is lower than the return on portfolio B?
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