What percentage of students completes the test in 45 minutes? b. What percentage of students completes the test between 30 and 55 minutes?

MATLAB: An Introduction with Applications
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8. The time to complete a math test is normally distributed with mean 48 minutes and standard deviation 12
minutes.
a. What percentage of students completes the test in 45 minutes?
b. What percentage of students completes the test between 30 and 55 minutes?
c. Five percent of students who took the longest to complete the test were asked to go to the
tutoring center. Within what time a student must finish the test in order to avoid going to the
tutoring center?
Transcribed Image Text:8. The time to complete a math test is normally distributed with mean 48 minutes and standard deviation 12 minutes. a. What percentage of students completes the test in 45 minutes? b. What percentage of students completes the test between 30 and 55 minutes? c. Five percent of students who took the longest to complete the test were asked to go to the tutoring center. Within what time a student must finish the test in order to avoid going to the tutoring center?
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