Business Statistics

694 Business Statistics

Note: The procedure of using Minitab and SPSS to solve Example 18.4 is the same

as the procedure used for Example 18.3.

Figure 18.18

SPSS output for Example 18.4

18B1. Use Mann–Whitney U test to determine whether there is a

signicant difference in the data about two groups provided

in the table below. Use  = 0.05.

Group 1 Group 2

17 25

19 27

14 29

15 31

16 32

12 31

21 30

18B2. Use Mann–Whitney U test to determine whether there is a

signicant difference in the data about two groups provided

in the table below. Use  = 0.05.

Group 1 Group 2

150 196

155 198

160 199

145 205

148 189

152 176

156 190

160 192

170 186

175 188

180 192

165