ectricalc has determined that the assembly time for a particular electrical component is rmally distributed with a mean of 20 minutes and a variance of 9 minutes. ) What is the probability that the average assembly time for 15 employees is between and 21? ) How large a sample is needed if we wish to be 99% confident that the assembly time ill be within 1 minute of the true mean?

ectricalc has determined that the assembly time for a particular electrical component is rmally distributed with a mean of 20 minutes and a variance of 9 minutes. ) What is the probability that the average assembly time for 15 employees is between and 21? ) How large a sample is needed if we wish to be 99% confident that the assembly time ill be within 1 minute of the true mean?

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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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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ectricalc has determined that the assembly time for a particular electrical component is
rmally distributed with a mean of 20 minutes and a variance of 9 minutes.
) What is the probability that the average assembly time for 15 employees is between
and 21?
) How large a sample is needed if we wish to be 99% confident that the assembly time
ill be within 1 minute of the true mean?

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