The full step-by-step solution to problem: 4E from chapter: 7.2 was answered by , our top Statistics solution expert on 09/01/17, 05:46AM. This textbook survival guide was created for the textbook: Elementary Statistics: A Step By Step Approach , edition: 9. The answer to “When should the t distribution be used to find a confidence interval for the mean?” is broken down into a number of easy to follow steps, and 15 words. This full solution covers the following key subjects: confidence, distribution, Find, interval, mean. This expansive textbook survival guide covers 33 chapters, and 1015 solutions. Since the solution to 4E from 7.2 chapter was answered, more than 242 students have viewed the full step-by-step answer. Elementary Statistics: A Step By Step Approach was written by and is associated to the ISBN: 9780073534985.