Suppose the study to learn about ages of students at College A and College B is completed. At College B, 250 students were surveyed, and 97 of them were ages 21 to 30. Which inference is best?
a. Based on this study, approximately 39% of students at College B are ages 21 to 30.
b. Based on this study, approximately 26% of students in the sample are ages 21 to 30.
c. Based on this study, approximately 26% of students at College B are ages 21 to 30
d. Based on this study, approximately 26% of college students are ages 21 to 30 .
e. Based on this study, approximately 39% of college students are ages 21 to 30 .
f. Based on this study, approximately 39% of students in the sample are ages 21 to 30