Test whether the mean sales in 3 gas stations are equal agai

Test whether the mean sales in 3 gas stations are equal against the alternative that not all the means are equal (use alpha = 1%). The following table provides summary statistics of three random samples taken from each gas station: Would your result change if alpha = 10% Why or why not

Solution

Since p-value is 0 < 0.01, conclude that all the means are not equal ai 1% los

if the level of significance is changed to 10%, then also the result remains the same

	Source of Variation	Sum of Squares	d.f.	Variance	F	p
	Between Groups:	6000	2	3000	556.0455	0.0000
	Within Groups:	64.7429	12	5.3952
	Total:	6064.743	14