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The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes. How much time should be given to complete the exam so that 90% of the students complete the exam in the allotted time?
 one year ago
 one year ago
The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes. How much time should be given to complete the exam so that 90% of the students complete the exam in the allotted time?
 one year ago
 one year ago

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HereticHalloranBest ResponseYou've already chosen the best response.0
I understand that its a Probability Distribution problem, but I dont know which formula(s) to use to figure this out
 one year ago

tkhunnyBest ResponseYou've already chosen the best response.1
M the proper number of minutes to meat the criterion. \((M70)/10 = Z_{90}\) Find the Zvalue with 10% of the Normal Distribution in the right tail. Solve for M.
 one year ago

HereticHalloranBest ResponseYou've already chosen the best response.0
You are awesome. Thank you.
 one year ago
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