A researcher wants to estimate the proportion of manufacturing companies that use the Six Sigma method. For this purpose, she takes a random sample of 50 manufacturing companies and finds out that 28 of them employ this method. The point estimate for the proportion of the population that uses this method is ___.
A) 0.88
B) 0.56
C) 0.44
D) 0.28
E) 0.22

Question

Quizplus · Accepted Answer

The point estimate of the proportion of manufacturing companies that use the Six Sigma method is the proportion of companies in the sample that use the method. In this case, 28 out of 50 companies use the method, giving a point estimate of 28/50 = 0.56.

A Researcher Wants to Estimate the Proportion of Manufacturing Companies