Question

mean of a certain production process is known to be 50 with a standard
deviation of 2.5. The production manager may welcome any change is mean value
towards higher side but would like to safeguard against decreasing values of mean.
He takes a sample of 12 items that gives a mean value of 48.5. What inference
should the manager take for the production process on the basis of sample results?
Use 5 per cent level of significance for the purpose.

Answer 1

Answer:

Yes

Step-by-step explanation:

No because you want to add them all together