SCENARIO 10-12
A quality control engineer is in charge of the manufacture of USB flash drives.Two different processes can be used to manufacture the flash drives.He suspects that the Kohler method produces a greater proportion of defects than the Russell method.He samples 150 of the Kohler and 200 of the Russell flash drives and finds that 27 and 18 of them,respectively,are defective.If Kohler is designated as "Group 1" and Russell is designated as "Group 2," perform the appropriate test at a level of significance of 0.01.
-Referring to Scenario 10-12,the same decision would be made if this had been a two-tail test at a level of significance of 0.01.

Question

Quizplus · Accepted Answer

The decision may not necessarily be the same in a two-tailed test, as it tests for the possibility of a difference in either direction, whereas the given one-tailed test specifically tests for a greater proportion of defects in the Kohler method.

SCENARIO 10-12 A Quality Control Engineer Is in Charge of the Manufacture