A report states that on average Moroccan boys (12-18 years old) get a haircut 5.8 times a year. An independent researcher randomly selected 20 boys (12-18 years old) and obtained these data.

3

2

1

3

7

2

9

4

6

6

8

0

5

6

4

2

1

3

4

1

At = 0.05, can it be concluded that the average is still 5.8 visits per year? (Hint: use the t test)