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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 ?rst 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?
two manufacturing processes are used.process 1 151 150 154 149 150 148 144 148 152 151 150 149 152 151process 2 152 151
Choose a person aged 19 to 25 years at random and ask, "how many times have you worked out in the past?" Call the response X for short.
A company is interested in knowing which are the potential sales next year if you use $ 20,000 in advertising expenses. The company uses the information from previous years to make its sales forecast.
At the .05 significance level, can we conclude that the guideline is still reasonable?
The resources use data and statistics to support answers to the same question, but they reach opposite conclusions! The textbook authors use the Gini Index to argue that income inequality is increasing. Perhaps it could be said that statistics are..
four types of solar energy collectors were collected. the data is in the accompanying file.a construct an anova table.b
Take the Independent Variable (1) and conduct research on comparing the Dependent variables (3) and conduct analysis using SPSS (i can do this part) and write a paper with methods and results. More details can be provided if interested.
companies that do business over the internet can often obtain probability information about web site visitors from
A sociologist wants to describe if the life expectancy of people in Africa is lesser than the life expectancy of people in Asia.
the recent default rate on all student loans is 6.8 percent. in a recent random sample of 293 loans at private
if z is a standard normal random variable then what is przgt-2.43? use four decimal places of accuracy.can you also
Develop a p chart with 3-sigma control limits and evaluate whether the process is in statistical control
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