test the null hypothesis that mb, mm, and mt are equal by setting a=.05. On the basis of this test, can we conclude that the bottom, middle and top shelf display heights have different effects on mean monthly sales?

Bottom	Middle	Top
58.2	73	52.4	55.80	hypothesized value	77.20	hypothesized value	51.50	hypothesized value
53.7	78.1	49.7	55.80	mean Bottom	77.20	mean Middle	51.50	mean Top
55.8	75.4	50.9	2.477095	std. dev.	3.102902	std. dev.	1.648029	std. dev.
55.7	76.2	54	1.011270	std. error	1.266754	std. error	0.672805	std. error
52.5	78.4	52.1	6	n	6	n	6	n
58.9	82.1	49.9	5	df	5	df	5	df
mean	55.8	77.2	51.5
SD	2.477	3.103	1.648	0.000	t	0.000	t	0.000	t
1.0000	p-value (two-tailed)	1.0000	p-value (two-tailed)	1.0000	p-value (two-tailed)
Ho:b=m=t