Instruction 8-5 The Actual Voltages of Power Packs Labelled as 12 Volts

question 71

Short Answer

Instruction 8-5
The actual voltages of power packs labelled as 12 volts are as follows: 11.77,11.90,11.64,11.84,12.13,11.99,and 11.77.
-Referring to Instruction 8-5,a confidence interval for this sample would be based on the t distribution with ________ degrees of freedom.

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Definitions:

Variance

The determination of the variability within a dataset, found by averaging the squares of the differences from the mean value.

P-value

The likelihood of getting test outcomes that are at least as significant as those seen in the test, under the assumption that the null hypothesis holds correct.

Z

In statistics, typically refers to a standard score indicating how many standard deviations an element is from the mean.

Null Hypothesis

A hypothesis in statistical analysis that assumes no significant difference or effect exists between certain characteristics, conditions, or variables.