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# Weights of Vacuum Cleaners Upright vacuum cleaners have

ISBN: 9780073386102 241

## Solution for problem 8 Chapter 9-2

Elementary Statistics: A Step by Step Approach 8th ed. | 8th Edition

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Elementary Statistics: A Step by Step Approach 8th ed. | 8th Edition

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Problem 8

Weights of Vacuum Cleaners 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 a _ 0.05, can it be concluded that the means of the weights are different? Hard body types Soft body types 21 17 17 20 24 13 11 13 16 17 15 20 12 15 23 16 17 17 13 15 16 18 18

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ST 512: Week Two Notes MaLyn Lawhorn August 21, 2017 and August 23, 2017 Conﬁdence Intervals Conﬁdence intervals require a parameter estimate, a standard error, and a probability statistic. Using these three elements, we are able to use the formula ▯ ▯ z▯=2E(▯)^ where z▯=2can be a probability using any distribution, not just the normal distribution....

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