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Name: The average weight of twenty-five grade six pupils is 35 kilograms wit
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Description: The average weight of twenty-five grade six pupils is 35 kilograms with a standard deviation of 0.4 kilogram. Is there a reason to believe that the pupils' average weight is less than 36.3 kg at the 5% level of significance? Assume that the populatio

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 average weight of twenty-five grade six pupils is 35 kilograms with a standard deviation of 0.4 kilogram. Is there a reason to believe that the pupils' average weight is less than 36.3 kg at the 5% level of significance? Assume that the population is approximately normally distributed.

Is this a one-tailed or two-tailed test?

What test statistic is to be used?

What is the decision rule?

What is the computed value of the test statistic?

What is your decision/conclusion regarding the null hypothesis?

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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