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We monitor the number of incoming calls into a doctor's office. Let X be the number of incoming calls between the hours of l pm and 2 pm and Y be the number of calls between l pm and 3 pm. If we model the number of calls in a period of t hours as a Poisson(lamda(t)) random variable and assume that the number of calls in non-overlapping time periods are independent, show that:
P (X = k | Y = n) = (n k) (1/2) ^n, k = 0,1, ...., n
Plot the data on the same line and give your impression regarding any apparent differences between the two companies.
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
A normal distribution with a mean of 55 and a standard deviation of 6 is evaluated to solve a business problem.
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
There are 20 qualified applicants for 5 trainee positions in a fast-food management program. How many different groups of trainees can be selected?
What was the highest score earned on the exam? According to Chebyshev's Theorem, how many students scored between 42 and 74?
A company makes camshafts. The camshaft lengths need to be within a certain tolerance or they will not fit. They have produced x bar and s charts
Illustrate a quantitative assessment of what our charts would look like and what these new targets would do to our operations.
He surveys a sample of 40 students and finds that for the most recent semester their average cost was $430 with a standard deviation of $80. What is the test value for this hypothesis test?
The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision,
A health services provider has been reimbursed by a national health insurance organization for a large number of services. It appears that overpayments may have occurred on many of the reimbursements
Create the table for frequency distribution that has 16 class intervals of width 1 inch. Utilize 61.5 inches as lower limit of first interval and 62.5 as upper limit.
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