The university of Fountain Lakes has just placed an advertisement in various school magazines, looking to recruit new students. At one stage in the ad, the following claim is made:
"A whopping 85% of our graduate students go on to achieve proessional employment within 6 months of graduation!"
There is a footnote at the bottom of the ad which qualifies this boast: "Note: a 95% confidence interval was constructed and we found that the proportion of students going on to professional employment within 6 months of graduation is within 0.01 of 0.85".
Four students see this adverstisement, including the footnote, and interpret the ad in different ways.
Alex: "They are 95% confident that 85% of students will go on to achieve professional employment within 6 months."
Barbara: "They know that 85% of students will go on to achieve professional employment within 6 months."
Chris: "They know that somewhere between 84% and 86% of students will go on to achieve professional employment within 6 months."
Donna: "They are 95% confident that somewhere between 84% and 86% of students will go on to achieve professional employment within 6 months."
The student that has the most correct interpretation is:
Select one:
a. Barbara
b. Alex
c. Chris
d. Donna