Reference no: EM13338060
A manufacturing company produces electricinsulators. If the insulators break when in use, a shortcircuit is likely to occur. To test the strength of the insulators destructive testing is carried out to determine how muchforce is required to break the insulators. Force is measured by observing how many pounds is applied to the insulators before itbreaks. The following data are from 30 observation from this experiment.
1,870 1,728 1,656 1,610 1,634 1,784 1,522 1,696 1,592 1,662
1,866 1,764 1,734 1,662 1,734 1,774 1,550 1,756 1,762 1,866
1,820 1,744 1,788 1,688 1,810 1,752 1,680 1,810 1,652 1,736
a. At the 0.5 level of significance, is there evidencethat he mean force is greater than 1,500 pounds.
b. What assumption must hold in order to perform thetest in (a)
c. Evaulate this assumption through a graphicalapproach
d. Based on (a) what can you conclude about the strengthof the insultors.
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