The weekly sales of an electrical shop are distributed normally with a standarddeviation of RM900. A statistical study of sales in the last nine weeks has founda confidence interval for the mean of weekly sales of (RM4663, RM5839). Findthe confidence level for this interval.

In question, We have given the standard deviation of RM900 and sample size of 9 with confidence…

Answered: The weekly sales of an electrical shop…

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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The weekly sales of an electrical shop are distributed normally with a standard deviation of RM900. A statistical study of sales in the last nine weeks has found a confidence interval for the mean of weekly sales of (RM4663, RM5839). Find the confidence level for this interval.