My company tests all new brands of golf balls to ensure that we meet certain specifications. One test conducted is intended to measure the average distance traveled when the ball is hit by my machine.If my company wishes to estimate the mean distance for a new brand to within 1.4 yards with 95% confidence, Assuming that past tests have indicated that the standard deviation of the distances the machine hits golf balls is approximately 11 yards. How many golf balls should I be able to hit by the machine to achieve the desired accuracy in estimating the? mean?