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The number of newspapers demanded daily in a large metropolitan area is believed to be an approximately normally distributed random variable. If more newspapers are demanded than are printed, the paper suffers an opportunity loss, in that it could have sold more papers, and a loss of public goodwill. On the other hand, if more papers are printed than will be demanded, the unsold papers are returned to the newspaper office at a loss.
Suppose that management believes that guarding against the first type of error, unmet demand, is most important and would like to set the number of papers printed at a level such that 75% of the time, demand for newspapers will be lower than that point.
How many papers should be printed daily if the average demand is 34,750 papers and the standard deviation of demand is 3,560?
Suppose that this test is given to 1000 students. What is the number of students that are expected to make scores between 170 and 230?
an anatomy teacher hypothesizes that the final grades in her class are distributed as 10 as 23 bs 45 cs 14 ds and 8 fs.
What is the z a/2 for a confidence level of 95%, the margin error of this sample and give a 95% confidence interval for the mean weight of boxes produced based on the sample mean of 16.4?
A probability value of .25 means that an event will occur:
1. a researcher conducts a study and concludes that a new behavioral health treatment program significantly reduces
Determining the probability that the two choose the same number?
Explain the differences between longitudinal and cross sectional business research studies. Which two types of probability sampling are best suited for business research and statistical data analysis, and why?
There are 8 members on the board of directors. If the board must form a committee of 6 members, how many different ways may the committee be selected from among the 8 board members?
Comparison of paired and unpaired samples test - Identify which of the two tests (Independent samples and Paired samples) test is the preferred test and justify your choice.
the four major competitors in the computer work-station market are sun microsystems 29 hewlett-packard 18.8 ibm 16and
let x be a random variable with fxx 2x3 if xgt1. compute pxgtk and compare it with the upper bound on this quantity
an ice cream store offers 18 different ice cream flavors and 6 different toppings. you are able to order one or two
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