* 1. A sample of 30 students from a Faculty has been obtained to estimate the average grade of the students' records in the Faculty. It is known from other courses that the standard deviation of the scores in said Faculty is 1.35 points. The mean of the sample was 6.8. Construct a 90% Confidence Interval for the average of the students' grades.

* 1. A sample of 30 students from a Faculty has been obtained to estimate the average grade of the students' records in the Faculty. It is known from other courses that the standard deviation of the scores in said Faculty is 1.35 points. The mean of the sample was 6.8. Construct a 90% Confidence Interval for the average of the students' grades.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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