By default, the identifier of the entity becomes the foreign key of the corresponding table

Which of the following is true about change management?

A. All changes, however small, must be approved by the CAB before implementation B. Emergency changes are too urgent to need approval before implementation C. Low risk changes may be pre-approved D. The change advisory board is for technical assessment and approval of changes only.

The manufacturer of bags of cement claims that they fill each bag with at least 50.2 pounds of cement. Assume that the standard deviation for the amount in each bag is 1.2 pounds

The decision rule is adopted to shut down the filling machine if the sample mean weight for a sample of 40 bags is below 49.8. Suppose that the true mean weight of bags is 50 pounds. Using this decision rule, what is the probability of a Type II error?A) 0.85 B) 0.70 C) 0.80 D) 0.75