A machine produces circular bolts and, as a quality control test, 250 bolts were
selected randomly and the diameter of their heads measures as follows:

Diameter of head (cm) Number of
components
0.9747
0.9750
0.9753
0.9756
0.9759
0.9762
0.9765
0.9768
0.9771
0.9774
0.9777
0.9780
–
–
–
–
–
–
–
–
–
–
–
–
0.9749
0.9752
0.9755
0.9758
0.9761
0.9764
0.9767
0.9770
0.9773
0.9776
0.9779
0.9782
2
6
8
15
42
68
49
25
18
12
4
1
Required:
Determined whether the customer is getting reasonable value if the label on the
circular bolt advertises that the average diameter of the head is 0.97642 cm.