Advertising Scores 18 17 21 17 21 16 12 21 18 14 17 16 15 17

Advertising Scores 18 17 21 17 21 16 12 21 18 14 17 16 15 17 17 20 18 10 14 15 Print Done

Solution

1) Option A

2)

F stat = 10.84

F crit = 2.758

Reject H0.

There is statistical evidence to conclude that all means are not equal.

		Samples
	1	2	3	4	5
N	6	6	6	6	6
Sigma X	104	110	66	50	98
Mean	17.33	18.33	11	8.33	16.33
sum x^2	1816	2040	820	500	1650
Var	2.6667	4.6667	18.8	16.6667	9.8667
Std dev	1.633	2.1602	4.3359	4.0825	3.1411
Std error	0.6667	0.8819	1.7701	1.6667	1.2824
		ANOVA summary
Source	SS	df	MS	F	P
Treatment	456.533	4	114.133	10.84	<0.001
Error	263.333	25	10.533