The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean weight of 56 gm. The process standard deviation is known to be 0.77 gm. A random sample of 49 candy bars yields a mean weight of 55.82 gm. Find the test statistic to see whether the candy bars are smaller than they are supposed to be.
A)-1.636
B)-1.645
C)-1.677

Question

Quizplus · Accepted Answer

The test statistic is calculated as (55.82 - 56) / (0.77 / sqrt(49)) = -1.636.

The Process That Produces Sonora Bars (A Type of Candy)