Answer:
16%
Step-by-step explanation:
The test has a mean of 65 with standard deviation of 5.
We want to find the percent of the
students we expect to receive a grade of 60 or less.
We can use the empirical rule to solve this question.
According to the Empirical rule , 68% within one standard deviation.
This means that 68% fall within one standard deviation below and above.
Hence just one standard deviation below will 34%. (60 to 65).
Therefore the percentage falling below 60 will be 50%-34%=16%
