CREST
Purchasers			Non-purchasers
34	35	23	44	52	46			28	22	44	33	55	63
28	48	28	34	33	52			45	31	60	54	53	58
41	32	34	49	50	45			52	52	66	35	25	48
29	59							59	61

how do you show the data present sufficient evidence to conclude there is a difference in the mean age of purchasers and non-purchaser? Use = 0.10