Ajax Peanut Butter's Quality Control Allows 2 Percent of the Jars

Multiple Choice

Ajax Peanut Butter's quality control allows 2 percent of the jars to exceed the quality standard for insect fragments.A sample of 150 jars from the current day's production reveals that 30 exceed the quality standard for insect fragments.Which is incorrect?

A) Normality of p may safely be assumed in the hypothesis test.
B) A right-tailed test would be appropriate.
C) Common sense suggests that quality control standards aren't met.
D) Type II error is more of a concern in this case than Type I error.