Tiremax claims their high-end tires average 80,000 km before they need to be replaced. A survey of owners of the Tiremaxhigh end tires is conducted by a consumer magazine. The lifespan of the tires for 84 of these owners was recorded. Based on the survey results, can the consumer magazine state that the average lifespan is less than Tiremax's claim at a 10% level of significance? [9 marks]

Tire Lifespan (km)
88,529	76,991	81,627	71,751	78,810	70,612
73,339	82,279	83,921	79,658	70,965	73,079
77,817	77,629	80,203	86,332	84,531	85,231
70,678	75,713	86,301	86,403	88,059	87,942
84,040	88,212	72,263	82,452	73,005	87,352
89,805	79,207	77,120	83,032	83,083	77,877
78,867	88,424	78,034	82,457	79,268	71,551
80,953	73,260	71,741	86,724	73,137	87,765
85,520	82,148	71,352	89,935	84,749	78,664
79,408	72,190	77,972	86,607	74,004	85,627
74,546	85,960	80,587	70,893	75,280	83,579
80,639	82,463	81,697	83,083	85,989	80,831
72,423	80,077	73,800	80,815	86,888	72,190
74,130	82,920	71,446	75,771	72,509	76,607