Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean and o= 12.1. Assume the population is normally distributed. A 90% confidence level requires a sample size of (Round up to the nearest whole number as needed.)

Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean and o= 12.1. Assume the population is normally distributed. A 90% confidence level requires a sample size of (Round up to the nearest whole number as needed.)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

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.

Question

**Sample Size Determination for 90% Confidence Level**

Objective: Determine the minimum sample size required when you want to be 90% confident that the sample mean is within one unit of the population mean.

Given:
- Population standard deviation (σ) = 12.1
- Confidence level = 90%

Assumption: The population is normally distributed.

**Instruction:**
A 90% confidence level requires a sample size of [ ].
(Round up to the nearest whole number as needed.)

**Action:**
Enter your answer in the answer box and then click "Check Answer."

**Interface:**
- All parts showing: [Progress bar at 75% completion]
- Options: "Clear All" button and "Check Answer" button available.

Note: Make sure to use the correct statistical formulas and tables to find the necessary sample size for the desired confidence level.

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