A survey was given to determine whether hours of sleep per night are independent of age. The following table shows the results. Conduct a test of independence to determine

whether hours of sleep are independent of age at the 0.05 level. USE CHI SQUARE STAT = 8.92. What is your conclusion?

Age Group

Hours of sleep 39 or younger 40 or older

fewer than 6 58 66

6 - 6.9 60 47

7 - 7.9 47 55

8 or more 35 82