Mathematics, 28.02.2020 19:25 sharondot2398
The length of time needed to complete a certain test is normally distributed with mean 57 minutes and standard deviation 8 minutes. a. What is the relative frequency of people who take between 49 and 65 minutes to complete the test? Sketch the distribution and shade in the area in question. b. Find the interval that contains the middle 95% of completion times for all people taking the test.
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The length of time needed to complete a certain test is normally distributed with mean 57 minutes an...
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