Answered: Q11 According to the Ministry of…

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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Question

Q11

According to the Ministry of Health national study among public hospitals, the
average mean of patient waiting time before consultation is 55 minutes. A random
sample of 25 patients was conducted with the findings indicated patients’ waiting
time is 60 minutes and standard deviation is 5 minutes. With the 5% significance
level and the data is assumed normal distribution, you as the public health
researcher is required to determine your hypothesis correctness that the sample
mean waiting time is less equal to 55 minutes. Use the critical value approach
method to answer it.

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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