Answered: s 21 24 17 12 15 15 20 14 20 16 16 17…

Name: Upright vacuum cleaners have either a hard body type or a soft body ty
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Description: Upright vacuum cleaners have either a hard body type or a soft body type. Shown are the weights in pounds of a sample of each type. At =α0.10 , can it be concluded that the means of the weights are different? Assume the variables are normally distrib

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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Upright vacuum cleaners have either a hard body type or a soft body type. Shown are the weights in pounds of a sample of each type. At =α0.10 , can it be concluded that the means of the weights are different? Assume the variables are normally distributed and the variances are unequal.

Hard body types	Soft body types
21	24
17	12
15	15
20	14
20	16
16	17
17	18
17	24
23	13
13
15
16
18
18
17
17

Use μ1for the mean weight of the hard body type.

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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