A largeelectronics company that hires many workers with disabilities wantsto det
ID: 2952620 • Letter: A
Question
A largeelectronics company that hires many workers with disabilities wantsto determine whether their disabilities affect such workersperformance. Use the level of significance =0.05 to decideon the basis of the sample data shown in the following tablewhether it is reasonable to maintain that the disabilities have noeffect on the workers performance:
Performance
Below Average
Average
Above Average
Blind
21
66
17
Deaf
22
72
17
No disability
31
103
26
H0 : Handicap and performance are(dependent / independent)
Ha : Handicap and performance are(dependent / independent)
b- Calculate X2
c- We (reject/can not reject)H0
A largeelectronics company that hires many workers with disabilities wantsto determine whether their disabilities affect such workersperformance. Use the level of significance =0.05 to decideon the basis of the sample data shown in the following tablewhether it is reasonable to maintain that the disabilities have noeffect on the workers performance:
Performance
Below Average
Average
Above Average
Blind
21
66
17
Deaf
22
72
17
No disability
31
103
26
H0 : Handicap and performance are(dependent / independent)
Ha : Handicap and performance are(dependent / independent)
b- Calculate X2
c- We (reject/can not reject)H0
Explanation / Answer
Chi-Square Test: Belowaverage, Average, Above average
Expected counts areprinted below observed counts
Chi-Square contributions are printed below expectedcounts
Below Above
average Average average Total
Blind 21 66 17 104
20.52 66.84 16.64
0.011 0.010 0.008
Deaf 22 72 17 111
21.90 71.34 17.76
0.000 0.006 0.033
No 31 103 26 160
disabi- 31.57 102.83 25.60
-lity 0.010 0.000 0.006
Total 74 241 60 375
H0: Handicap and performanceare independent
Ha: Handicap and performance are dependent
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