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The times that a cashier spends processing each person's order have mean 4 minutes and standard deviation 2.5 minutes. What is the approximate probability that it will take more than 7 hours to process the orders of a random sample of 100 people? Find the number of customers n such that the probability that the orders of all n customers can be processed in less than 2.5 hours is approximately .025. Please help with this question.
What is the probability that the airline will not have enough seats for all the ticket holders who show for the flight? (Use 3 decimal places)
A business has 5 telephone lines. The first rings every minute on the average, the second every ½ minute, the third every 2 minutes, the fourth every 5 minutes,
The following output is the result of running a linear regression on WEIGHT (y) = average weight in pounds for American females. Based on this regression model output, what will be the weight of a Russian Female who is 71 inches tall?
A) What is expected time to pain relief for a male following treatment? B) What is the expected time to pain relief for a participant aged 50 following treatment
Find the margin of error for the given values of c, s, and n. How many subjects are needed to estimate the number of books read the previous year within one book with 99% confidence?
in a certain parking lot 45 of the cars have four doors 16 of the cars are blue and 4 of the cars have four doors and
Suppose that the mean of the annual return for common stocks from 2000 to 2012 was 8.5%, and the standard deviation of the annual return was 25.2%.
the project manger of a software company requested an analysis of past performance. the assigned analyst compared
discuss what satisfying assumption 1-3 for regression inferences by the variables under consideration would mean. an
What deviations from ideality would you expect at these reaction conditions? In order of importance, list the types of intermolecular forces you think contribute to nonideality. Is the van der Waals equation appropriate? Explain.
the mean score on the sat writing section was 497 for the a given graduating class. noting that this test is scored on
Do a complete regression analysis by performing the steps below. Note: No regression should be done when r is not significant. Draw a scatter plot. Compute the correlation coefficient.
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