The post test and pretest scores represent mean scores on a 12-item motor skill assessment given to children who are visually impaired. In between the test administrations, children received an 8-week intervention designed to increase motor skills. Was the intervention successful at increasingmotor skills? Use alpha = .05. Write the null and alternative hypotheses. (Be sure to state the difference being tested)

Data

Group,school,cane,girls,VI,Blind_1,ethnicity,BMI,MeanPMCpre,MeanPMCpost,Pretest,Posttest,ZBMI,ageinyears,LOCTGMD3PRE,LOCTGMD3Post

USDB,2,0,0,3,0,2,64.4,1.0,1.5,25.0,34.0,3.1,12.5,25,34

USDB,2,1,0,2,0,1,29.6,2.5,3.0, ,28.0,0.5,12.1, ,26

USDB,2,0,1,3,0,2,23.0,2.5,2.2,17.0,30.0,0.0,15.4,13,29

USDB,2,0,1,3,0,1,21.2,2.8,1.5,24.0,27.0,-0.1,12.4,23,30

USDB,2,0,0,3,0,2,32.2,3.2, ,10.0, ,0.7,14.0, ,

USDB,2,0,1,3,0,1,15.7,3.8,4.0,32.0,41.0,-0.6,5.8,26,40

USDB,2,1,1,2,0,2,27.2,2.3, ,15.0, ,0.3,14.0,19,

USDB,2,0,1,3,0,2,38.0,2.8,2.2,14.0,34.0,1.1,15.4,18,38

USDB,2,1,0,2,0,2,39.2,3.0,4.0,30.0,32.0,1.2,10.9,27,28

USDB,2,0,0,4,0,1,15.3,2.7,2.8,38.0,44.0,-0.6,10.6,36,45

USDB,2,1,0,2,0,1,4.3,4.0,3.5,32.0,41.0,-1.4,10.2,30,43

USDB,2,1,1,2,0,1,2.9,2.2,2.0,12.0,35.0,-1.5,11.7,16,37

USDB,2,0,0,4,0,1,1.8,3.2, ,39.0, ,-1.6,12.8,36,

USDB,2,0, ,3,0,2,26.5,3.0,2.0,34.0,34.0,0.3,13.4,28,33

USDB,2,0,1,3,0,1, ,2.3, ,34.0, , ,12.0,30,

USDB,2,1,1,2,0,2,16.7,4.0,3.5,20.0,20.0,-0.5,12.4,18,18

USDB,2,0,1,3,0,2,34.6,2.5,1.8,21.0,31.0,0.9,13.4,23,36

Online,1,1,1,1,1,2,15.4,2.7,3.5,6.0,20.0,-0.6,7.7,6,18

Online,0,0,1,1,1,4,17.7,2.3,2.8,9.0,9.0,-0.4,7.1,11,13

Online,1,1,1,3,0,2,19.9,2.8,3.2,0.0,18.0,-0.2,8.1,0,22

Online,1,1,0,2,0,2,13.9,2.2,2.5,24.0,30.0,-0.7,9.9,24,28

Online,1,1,0,2,0,2,20.5,3.5,1.8,14.0,13.0,-0.2,6.3,14,13

Online,0,1,1,4,0,4,14.1,1.5,2.3,21.0,20.0,-0.7,10.4,18,24

Online,1,1,1,1,1,2,16.0,2.5,2.7,13.0,22.0,-0.5,5.6,13,22

Online,1,1,1,1,1,2,33.5,2.3,1.7,13.0,10.0,0.8,17.8,13,10

Online,1,1,1,1,1,2,15.5,1.7,1.8,19.0,20.0,-0.6,14.2,23,24

Online,1,1,1,4,0, ,15.1,2.0,1.5,9.0,12.0,-0.6,10.4,6,14

Control,1,0,0,3,0,1,23.3,3.0,3.2,44.0,29.0,0.0,13.8,43,29

Control,1,0,0,3,0,1,23.1,4.0,3.7,48.0,48.0,0.0,11.7,46,46

Control,1,0,0,3,0,1,20.6,3.3,3.0,42.0,40.0,-0.2,12.6,44,42

Control,1,0,0,3,0,2,16.2,3.0,3.5,48.0,46.0,-0.5,11.4,46,42

Control,1,1,0,2,0,1,17.0,3.3,2.5,43.0,41.0,-0.5,10.4,43,43

Control,1,0,1,3,0,1,21.5,2.0,2.8,30.0,19.0,-0.1,13.6,32,22

Control,1,1,0,1,1,1,23.5,1.7,2.2,37.0,36.0,0.0,13.1,39,38

Control,2,0,1,3,0,1,21.2,1.2,1.5,31.0,27.0,-0.1,5.1,30,30

Control,2,1,0,2,0,2,39.2,2.5,4.0,32.0,32.0,1.2,13.1,28,28

Control,2,1,0,2,0,1,4.3,2.7,3.8,41.0,43.0,-1.4,15.1,43,43

LSDB, , ,0, ,0, , ,2.8,2.8,48,48, ,9,46,46

LSDB, , ,1, ,0, , ,2,2.2,46,48, ,9,46,46

LSDB, , ,0, ,0, , ,4,4,40,40, ,9,38,39

LSDB, , ,1, ,0, , ,3,3,42,45, ,9,42,47

LSDB, , ,1, ,0, , ,2,2,38,44, ,9,38,43

LSDB, , ,1, ,0, , ,3,3.2,28,32, ,8,26,30

LSDB, , ,0, ,0, , ,2.4,2.6,35,35, ,8,37,37

LSDB, , ,1, ,0, , ,1,1.4,12,14, ,9,10,12

LSDB, , ,1, ,1, , ,1.4,1.6,8,8, ,12,8,8

LSDB, , ,0, ,0, , ,3.8,3.8,40,42, ,13,40,42

LSDB, , ,0, ,0, , ,2.6,3,38,39, ,18,35,38

LSDB, , ,1, ,0, , ,2.6,2.8,44,47, ,19,40,43

LSDB, , ,1, ,0, , ,1.6,1.4,46,48, ,16,44,46

LSDB, , ,1, ,0, , ,2.6,2.4,48,48, ,16,46,46

LSDB, , ,0, ,0, , ,2.8,2.8,42,46, ,12,37,41

LSDB, , ,0, ,0, , ,3.2,3.4,44,45, ,13,43,44

LSDB, , ,1, ,1, , ,3,3,44,44, ,16,38,38

LSDB, , ,0, ,1, , ,3,2.8,38,40, ,19,36,38

LSDB, , ,1, ,0, , ,2.4,2.8,44,46, ,15,44,44

LSDB, , ,0, ,1, , ,2.2,2.4,27,31, ,9,30,34

LSDB, , ,0, ,0, , ,3.8,3.8,46,46, ,14,44,44

LSDB, , ,1, ,1, , ,2,2,26,26, ,11,28,28

LSDB, , ,0, ,0, , ,3.2,3,41,44, ,10,42,42

LSDB, , ,0, ,0, , ,2.6,2.6,42,42, ,17,40,40

LSDB, , ,0, ,0, , ,1.8,2.2,34,38, ,13,30,34

LSDB, , ,0, ,0, , ,2.6,2.6,42,42, ,12,42,42

LSDB, , ,0, ,0, , ,2.6,2.6,44,44, ,13,42,42

LSDB, , ,0, ,0, , ,3.2,3.2,46,46, ,13,44,44

LSDB, , ,0, ,0, , ,1.8,2.2,48,48, ,12,46,46

LSDB, , ,1, ,0, , ,3.2,3.2,42,46, ,13,39,43

LSDB, , ,0, ,0, , ,2,2.6,48,48, ,12,46,46

LSDB, , ,0, ,0, , ,3.2,3.2,48,48, ,12,46,46

LSDB, , ,0, ,1, , ,3.2,3.2,40,43, ,17,37,40

LSDB, , ,0, ,0, , ,3.2,3.2,34,36, ,17,34,34

LSDB, , ,0, ,1, , ,1.6,1.4,22,24, ,16,23,25

LSDB, , ,0, ,1, , ,3,3,46,46, ,17,42,42

LSDB, , ,1, ,0, , ,1.8,1.8,38,40, ,17,40,42

LSDB, , ,1, ,0, , ,2.4,2.6,40,42, ,17,42,44

LSDB, , ,1, ,0, , ,3,3,38,42, ,16,42,42

LSDB, , ,1, ,0, , ,1.6,1.6,39,45, ,16,43,45

LSDB, , ,1, ,1, , ,2.4,2.4,38,38, ,16,34,34

LSDB, , ,1, ,1, , ,2,2,15,15, ,15,15,15

LSDB, , ,1, ,0, , ,2.8,2.8,44,44, ,16,42,42

LSDB, , ,0, ,0, , ,3.8,3.8,41,43, ,16,39,41

LSDB, , ,1, ,1, , ,1.4,1.6,24,24, ,17,24,24

LSDB, , ,1, ,0, , ,3.2,3.2,35,35, ,16,33,33

LSDB, , ,1, ,1, , ,2.8,2.8,39,42, ,16,41,42

LSDB, , ,1, ,1, , ,2.8,2.8,12,14, ,15,11,13

LSDB, , ,0, ,0, , ,2.8,2.8,38,38, ,16,36,36

LSDB, , ,1, ,0, , ,2.8,2.8,15,15, ,12,14,14

LSDB, , ,0, ,0, , ,3.6,3.6,48,48, ,16,46,46

LSDB, , ,0, ,1, , ,3.4,3.4,36,39, ,17,36,39

LSDB, , ,0, ,0, , ,3.8,3.6,48,48, ,18,46,46

LSDB, , ,0, ,0, , ,1.8,1.8,48,48, ,16,46,46

LSDB, , ,1, ,0, , ,2.4,2.4,36,36, ,12,41,41

LSDB, , ,0, ,1, , ,1.6,1.8,22,27, ,17,19,24

LSDB, , ,0, ,0, , ,3,3,40,44, ,13,42,42