According to U.S census estimates there were about 20 millionchildren between 8 and 12 years old( referred to as tweens) in theunited states in 2009. A recent survey of 1, 223 8- to 12 -year-oldchildren ( S. Jayson , it's cooler than ever to be a tween.''USAtoday February 4, 2009 pp, 1A, 2A) reported the following results,Suppose that the survey was based on 600 boys and 623 girls.
What tween did in the past week Boys girls
Played a game on a video 498 243
Game system
Read a book for fun 276 324
Gave product advice to parents 186 181
Shopped a mall 144 262
For each type of activity, determine whether there is adifference between boys and girls at the 0.05 level ofsignificance.
