I'm stumped with a probability question for my course.

The data collected from the 20 sampled students as stated in question 1 is as follows:

5

5

3

4

5

8

4

6

8

4

5

3

3

7

6

7

5

5

6

8

1.1The average number of hours worked by the selected students is normally distributed with a mean of 5 and a standard deviation of 2 hours. The question is to determin the probability of how many students work more than 8 hours per day.

im stumped. do i need to refer to a probability table?

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