Stats 14

File:  Waterflowa. Produce the relevant ANOVA table and conduct a hypothesis test to determine if the mean detection time differs among the four shutoff valve models. Use a significance level of 0.05.b. Use the Tukey-Kramer multiple comparison technique to discover any differences in the average detection time. Use a significance level of 0.05.c. Which of the four shutoff valves would you recommend? State your criterion for your selection.

Data

17

17

17

-0.5

18

17

-0.5

18

3.4

0.5

17 16 25 18 2.4 -0.1 -0.5 0.5

18

1.9 1.5

18 14

21 3.4

3.5

17 23

0.9 -2.5

10

26

-4.6

0.5 -2.5

11 14

18

-2.1

0.5

																	Valve 1	Valve 2	Valve 3	Valve 4	RESI1	RESI2	RESI3	RESI4
						17							18	28		2.4		1.9	2.5				–				0.5
	10		25		-4.6		0.9	-0.5
	11	30			3.4	-5.1	4.5
	16		26	19		-0.1		1.5
		14	27		21	-0.6		3.5
	23		-2.1			-2.5
13	12	-1.6	-5.5
20	15	3.9
22	-3.6	-3.5

Description

WATERFLOW
File:WATERFLOW.xls
Column A:	Time for the sensor for Valve 1 to detect the water flow
Column B:	Time for the sensor for Valve 2 to detect the water flow
Column C:	Time for the sensor for Valve 3 to detect the water flow
Column D:	Time for the sensor for Valve 4 to detect the water flow
Column E:	Residuals for Valve 1
Column F:	Residuals for Valve 2
Column G:	Residuals for Valve 3
Column H	Residuals for Valve 4

Sheet3