Question: You'll be using the data from Lab 1 (the small group lab on product comparison) again.

(A) For each of your two brands, calculate the 90% and 99% confidence intervals.

(B) Sketch all confidence intervals on a common scale. Clearly label or otherwise indicate each line.

(C) Summarize, in language appropriate for a consumer magazine, your observations about the differences, or lack thereof, between your two brands.