試題詳解

11. A random sample of 100 people was taken. Fifty-five of the people in the sample favored Candidate A. We are interested in determining whether the proportion of people in the population in favor of Candidate A is less than60%. What is the value of the test statistic?
(A)-1.005;
(B)-1.02;
(C) 1.005;
(D) 1.02.