Refer to Exercise 7.70. Find the quartiles of the time to complete the research project. In exercise
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Refer to Exercise 7.70. Find the quartiles of the time to complete the research project.
In exercise 7.70
The demand for a daily newspaper at a newsstand at a busy intersection is known to be normally distributed with a mean of 150 and a standard deviation of 25. How many newspapers should the newsstand operator order to ensure that he runs short on no more than 20% of days?
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