Exhibit 9-5
A random sample of 100 people was taken. Eighty-five of the people in the sample favored Candidate A. We are interested in determining whether or not the proportion of the population in favor of Candidate A is significantly more than 80%.
-Refer to Exhibit 9-5. The p-value is
A)0.2112
B)0.05
C)0.025
D)0.1056

Question

Quizplus · Accepted Answer

The p-value is calculated using a hypothesis test for proportions. The null hypothesis is that the population proportion is 0.8. The sample proportion is 0.85. Using a standard normal distribution, the p-value is found to be 0.1056.

Exhibit 9-5 a Random Sample of 100 People Was Taken. Eighty-Five of Eighty-Five