A company in the golfing industry is interested in testing its new driver to see if it has greater length off the tee than the best-selling driver. To do this, it has selected a group of golfers of differing abilities and ages. Its plan is to have each player use each of the two clubs to hit five balls. It will record the average length in yards of the drives with each club for each player.

Player	New Club	Leading Club
1	236.4	237.2
2	202.5	200.4
3	245.6	240.8
4	257.4	259.3
5	223.5	218.9
6	205.3	200.6
7	266.7	258.9
8	240.0	236.5
9	278.9	280.5
10	211.4	206.5

The correct null and alternative hypotheses (assuming the new club is group 1, leading club is group 2, and d = group 1 value - group 2 value) are

	A.	H0 : d= 0 and HA : d> 0.
	B.	H0 : d= 0 and HA : d 0.
	C.	H0: 1 - 2 = 0 and HA : 1 - 2 < 0.
	D.	H0 : d 0 and HA : d= 0.