Test#	1	2	3	4	5	6	Mean	Range
Monday	96	74	92	84	65	77	81.33	31
Tuesday	93	99	73	63	98	76	83.67	36
Wednesday	64	92	101	91	73	90	85.17	37
Thursday	100	67	86	76	99	91	86.50	33
Friday	84	97	76	92	82	99	88.33	23

3) If the NOx emission from VQ TDi engines is normally distributed with a mean of 75 mg/km and standard deviation 5mg/kg, do you think the VW TDi engines are capable of meeting the EPA guidelines for NOx emission? Yes or no