Answered: The weight of school bags for primary…

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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The weight of school bags for primary school students in Selangor according to the normal distribution with a standard deviation of 6kg. A school teacher in Bandar Baru Bangi wanted to take a random sample of the weight of student bags at her school. Determine the minimum number of school bags that the teacher needs to weigh so that the probability of the mean of the sample exceeding the mean of the population of at least 3kg does not exceed 0.011

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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