Ă‚Â Tee tests. Does it matter what kind of tee a golfer places the ball on? The company that manufactures Ă˘â‚¬Ĺ“StingerĂ˘â‚¬Âť tees claims that the thinner shaft and smaller head will lessen resistance and drag, reducing spin and allowing the ball to travel farther. Golf Laboratories, Inc. compared the distance traveled by golf balls hit off regular wooden tees to those hit off Stinger tees. All the balls were struck by the same golf club using a robotic device set to swing the club head at approximately 95 miles per hour. Summary statistics from the test are shown in the table. Assume that 6 balls were hit off each tee and that the data were suitable for inference. Is there evidence that balls hit off the Stinger tees would have a higher initial velocity?
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