(4 Points) Over an entire summer, an amusement park gets an average of 21.7 people per day thathave togo to the infirmary. Some days it is higher than this. Some days it is lower than this. The standard deviation is 4.2. The distributionfor the amount ofpeople treated is approximately normal.

1. For a 10-day period, here are the number of people treated each of those 10 days:

Day

1

2

3

4

5

6

7

8

9

10

Number treated

25

19

17

15

20

24

30

19

16

23

Make a control chart for the daily numbertreated, andplot this data on that chart