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Assume you are requested to gather data on the time it takes for a single employee to process product returns at a customer service counter in a given 8-hour period at a major merchandising retailer. Specifically each time the employee processes a return, you document the elapsed time in minutes. Later in the evening, you create a histogram. Speculate on the shape of this histogram. What would be the most plausible probability distribution and why? Be sure to clearly justify your rationale.
Multiply by 50 to get the middle 95% of the distribution of the gamblers winnings on nights when he places 50 bets. (d) What is the probability that the gambler will lose money if he makes 50 bets?
The time needed for college students to complete a certain paper-and-pencil maze follows a Normal distribution, with a mean of 70 seconds and a standard deviation of 15 seconds.
cell phone company offers two plans to its subscribers. at the time new subscribers sign up they are asked to provide
Explain the process of factoring a trinomial with a leading coefficient that is not equal to one. Why is this process more difficult than when the leading coefficient is equal to one? Give an example. How could we apply FOIL in this context?
A sample of 350 hats is selected and the sample mean is 3.25 pounds. Using a level of significance of .10, is there evidence that the population mean weight of the hats is greater than 3.5 pounds? Fully explain your answer.
1. there are two coin purses. the first coin purse contains a penny p and a nickel n. the second coin purse contains a
the us department of education reports that 46 of full-time college students are employed while attending college. a
question 1a explain the methodology associated with a sample based survey scheme for the estimation of catch data for
Provide examples of a different data collection method and a data collection instrument used in managerial research. Why is it important to ensure that these data collection methods and instruments are both reliable and valid?
the following data were collected for a test of linear correlation and spearmans rank correlation was used2.2 3.3 3.3
What is the probability that a respondent said neither the Big Ten nor the Pac-10 would have a team in the Rose Bowl?
recall the gas station example where y is the daily revenues from the gas station. suppose a random sample of 5 days
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