6. Refer to Exercise 5. True or false: a. If the proportion of defectives in the

Question

6. Refer to Exercise 5. True or false: a. If the proportion of defectives in the sample is less than 12%, it is reasonable to conclude that the new process is better. b. If the proportion of defectives in the sample is only slightly less than 12%, the difference could well be due entirely to sampling variation, and it is not rea- sonable to conclude that the new process is better. c. If the proportion of defectives in the sample is a lot less than 12%, it is very unlikely that the dif- ference is due entirely to sampling variation, so it is reasonable to conclude that the new process is better.

Explanation / Answer

Ans:

Option b and c are true,as it gives the justification that if there is larger difference in proportion of defective,only then we can conclude that the new process is better or not,as slight difference may be due to sampling variation.

Option a is false.

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