The height of six randomly selected sailors is in inches: 63, 65, 68, 69, 71 and 72. The height of ten randomly selected soldiers is 61, 62, 65, 66, 69, 69, 70, 71, 72 and 73. Discuss in the light of these data that soldiers are on the average taller than sailors. Assume that the heights are normally distributed. How would you perform this at 1% and 5% level of significance? Which technique would you apply if population standard deviation is known?

1. Let μ1 be the population mean for sailors and μ2 be the population mean for soldiers. Null…

Answered: The height of six randomly selected…

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 height of six randomly selected sailors is in inches: 63, 65, 68, 69, 71 and 72. The height of ten randomly selected soldiers is 61, 62, 65, 66, 69, 69, 70, 71, 72 and 73. Discuss in the light of these data that soldiers are on the average taller than sailors. Assume that the heights are normally distributed.
How would you perform this at 1% and 5% level of significance?
Which technique would you apply if population standard deviation is known?

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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