A sociologist develops a test to measure attitudes about public transportation, and 27 randomly selected subjects are given the test. Their mean score is 76.2 and their standard deviation is 21.4....

Extracted text: A sociologist develops a test to measure attitudes about public transportation, and 27 randomly selected subjects are given the test. Their mean score is 76.2 and their standard deviation is 21.4. Assume that the population is normally distributed. Find the 95% confidence interval for the mean score of all such subjects. Round to one decimal place. ..... O A. 69.2 to 83.2 O B. 67.7 to 84.7 OC. 64.2 to 88.2 O D. 74.6 to 77.8