16:03 d 12.0 VOD :4G KB/S ul 41% 4 LTED U.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 1.05 points. The mean of the sample was 3.5. Construct a 90% Confidence Interval for the average of the students' grades.

A First Course in Probability (10th Edition)
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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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16:03 d
12.0 VoD :4G
KB/S LTEB l 41% 4
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 1.05 points. The mean
of the sample was 3.5.
Construct a 90% Confidence
Interval for the average of the
students' grades.
Transcribed Image Text:16:03 d 12.0 VoD :4G KB/S LTEB l 41% 4 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 1.05 points. The mean of the sample was 3.5. Construct a 90% Confidence Interval for the average of the students' grades.
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