Par, inc. is a manufacturer of golf equipment and has developed
a new golf ball that has been designed to provide ‘extra distance.”
In a test if driving distance using a mechanical driving device, a
sample of Par golf balls was compared with a sample of golf balls
made by Rap, Ltd., a competitor (given in the table below). Also,
based on the data from previous driving distance tests, the two
population standard deviations are known with s1= 15
yards...