In the video survey, 31 of the 91 (34%) students expect an A for their grade in the course, and
Consider the following statements about confidence intervals. Determine which are true and which are false. Explain your reasoning carefully.
a. There is a 95% chance that the percentage of students in the STAT 21 class who expect an A for the course is between 26% and 42%.
b. There is a 95% chance that the sample percentage is in the interval (26%,42%).
c. About 95% of the STAT 21 students will be contained in a 95% confidence interval.
d. Out of one hundred 95% confidence intervals for a population parameter, we expect 95 to contain the population parameter.