The national sleep foundation used a survey to determine whether hours of sleeping per night are independent of age (newsweek, january 19, 2004). the following show the hours of sleep on weeknights for a sample of individuals age 49 and younger and for a sample of individuals age 50.

hours of sleep
age fewer than 6 6 to 6.9 7 to 7.9 8 or more total
49 or younger 34 59 77 70 240
50 or older 35 58 74 93 260
conduct a test of independence to determine whether the hoursof sleep on weeknights are independent of age. use = .05.

compute the value of the 2 test statistic (to 2 decimals).