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A company's customer service hotline handles many calls relating to orders, refunds, and other issues. The company's records indicate that the median length of calls to the hotline is 4.4 minutes with an IQR of 2.3 minutes.
a) If the company were to describe the duration of these calls in seconds instead of minutes, what would the median and IQR be?
b) In an effort to speed up the customer service process, the company decides to streamline the series of pushbutton menus customers must navigate, cutting the time by 24 seconds. What will the median and IQR of the length of hotline calls become?
A radio amateur wishes to transmit a message. The frequency on which she sends the Morse signals is subject to random disturbances according to a Poisson process with intensity λ per second.
Identify and interpret the p-value for the test. Source: Andy Gardiner, "NCAA on Guard for ‘Rolled' Bats," USA Today, June 17, 2009, p. 8C.
By differentiating the distribution function of a WEIB( 8,,6) random variable (equation (4.3.28) ), show that its density is given by equation (4.3.29).
-Explain at least two (2) possible reasons for the differences between the results of exploration and trade by the Chinese and by the European states.
a) What are the mean and standard deviation of the team times? b) Suppose that the teams best time to date is 9.9 minutes. What is the probability that the team beats its own best time?
The parameter of interest is the mean score in this population. The sample is an SRS of size n = 4 drawn from the population. a) Find the mean of the 10 scores in the population. This is the population mean.
the proportion of public accountants who have changed companies within the last three years is to be estimated within
a soft drink dispenser is set to automatically dispense drinks and ice in 8 oz. cups. the machine is set to fill the
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Search the internet for examples of how categorical data is used in the workplace. As a hint, type "categorical data" followed by a topic of interest to you into the search engine.
How would I calculate estimates of L, Lq, W, Wq and probability that there is no customer in the system? How would I calculate L, Lq, W, Wq and probability there is no voter in the system with 2 customer service representatives?
Listed below is the selling price for a share of Coca Cola, at the close of the year. Determine the least squares trend equation.
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