A company operates three shifts every day of the week. Each shift includes full-
ID: 3126587 • Letter: A
Question
A company operates three shifts every day of the week. Each shift includes full-time hourly workers, nonsupervisory salaried employees, and supervisors/manager. The company would like to know if there is a difference and the shift in terms of the number of hours of work missed due to employee fitness. To control for differences that might exist across employee groups, the company randomly selects on employee from each employee group shifts and records the number of hours missed for one years The results of the study are shown is the accompanying table complete p a through c develop the appropriate test to determine whether blocking is effective or not calculate the test at the alpha = 0.10 level of significant Determine the null and alternative hypothesis for this test. Choose the correct answer below What is the F-test statistic for this test? What is the f-critical value for this test?Explanation / Answer
a). Option C.
F statistic =2.26
F critical =4.325
2.26 < 4.325, The null hypothesis is not rejected.
SUMMARY
Count
Sum
Average
Variance
H
3
133
44.3333
69.3333
N
3
150
50.0000
19.0000
S/M
3
145
48.3333
42.3333
shift1
3
122
40.6667
26.3333
shift2
3
151
50.3333
4.3333
shift3
3
155
51.6667
17.3333
ANOVA
Source of Variation
SS
df
MS
F
P-value
F crit
Block
50.8889
2
25.4444
2.26
0.2208
4.325
Shift
216.2222
2
108.1111
9.59
0.0298
4.325
Error
45.1111
4
11.2778
Total
312.2222
8
Level of significance
0.1
SUMMARY
Count
Sum
Average
Variance
H
3
133
44.3333
69.3333
N
3
150
50.0000
19.0000
S/M
3
145
48.3333
42.3333
shift1
3
122
40.6667
26.3333
shift2
3
151
50.3333
4.3333
shift3
3
155
51.6667
17.3333
ANOVA
Source of Variation
SS
df
MS
F
P-value
F crit
Block
50.8889
2
25.4444
2.26
0.2208
4.325
Shift
216.2222
2
108.1111
9.59
0.0298
4.325
Error
45.1111
4
11.2778
Total
312.2222
8
Level of significance
0.1
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