Question
The mean time to complete a psychology exam is 34 minutes with a standard deviation of 8 minutes. Assume the distribution is normal. Find the probability of a student taking less than 28 minutes.
Answers
MathMate
Z=(28-μ)/σ
Look up the standard normal distribution table and look at the percentage for the left tail.
Look up the standard normal distribution table and look at the percentage for the left tail.