A survey among seniors at a large university revealed that the number of hours spent studying the week before final exams was normally distributed with a mean of 30 hours and a standard devation of 7. What percent of seniors spent less than 25 hours studying? Round your % to 1 decimal place

MATLAB: An Introduction with Applications
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A survey among seniors at a large university revealed that the
number of hours spent studying the week before final exams
was normally distributed with a mean of 30 hours and a
standard devation of 7. What percent of seniors spent less than
25 hours studying? Round your % to 1 decimal place
The age at which babies walk is normally distributed with a
mean of 13 months with a standard deviation of 1.5 months.
Which age separates the youngest 7.5% that walked?
Transcribed Image Text:A survey among seniors at a large university revealed that the number of hours spent studying the week before final exams was normally distributed with a mean of 30 hours and a standard devation of 7. What percent of seniors spent less than 25 hours studying? Round your % to 1 decimal place The age at which babies walk is normally distributed with a mean of 13 months with a standard deviation of 1.5 months. Which age separates the youngest 7.5% that walked?
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