2. The time to complete a standardized exam is approximately normal with a mean of 70 minutes & a standard deviation of 10 minutes. Using the 68-95-99.7 rule, if students are given 90 minutes to complete the exam, what percentage of students will not finish?
A. 32%
B. 5%
C. 2.5%
D. 0.0015%

confused on how to solve this problem to get the answer

Question

2. The time to complete a standardized exam is approximately normal with a mean of 70 minutes & a standard deviation of 10 minutes. Using the 68-95-99.7 rule, if students are given 90 minutes to complete the exam, what percentage of students will not finish?
A. 32%
B. 5%
C. 2.5%
D. 0.0015%

confused on how to solve this problem to get the answer

anonymous · Answer

2.5 ^ should be the correct one!

anonymous · Answer

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