Production managers on an assembly line must monitor the output to be sure that

Question

Production managers on an assembly line must monitor the output to be sure that the level of defective products remains small. They periodically inspect a random sample of the items produced. If they find a significant increase in the proportion of items that must be rejected, they will halt the assembly process until the problem can be identified and repaired. Complete parts a through d below. a) Write null and alternative hypotheses for this problem. A. Upper H 0H0: The level of defective products remains the same. Upper H Subscript Upper AHA: The level of defective products has increased. B. Upper H 0H0: The level of defective products has decreased. Upper H Subscript Upper AHA: The level of defective products has increased. C. Upper H 0H0: The level of defective products has increased. Upper H Subscript Upper AHA: The level of defective products has decreased. D. Upper H 0H0: The level of defective products remains the same. Upper H Subscript Upper AHA: The level of defective products has decreased.

Explanation / Answer

The correct set of hypotheses is:

H0: The level of defective products remains the same.

HA: The level of defective products has increased.

Option A is correct.

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