A Production Process That Is in Control Has a Mean $\mu$

question 55

Essay

A production process that is in control has a mean ( $\mu$ ) of 80 and a standard deviation ( $\sigma$ ) of 10.
a.Determine the upper and the lower control limits for sample sizes of 25.
b.Five samples had means of 81, 84, 75, 83, and 79. Construct an x-bar chart and explain whether or not the process is in control.

Formulate null hypotheses for dependent and independent samples.

Calculate and interpret the difference scores in dependent samples.

Identify and apply the correct critical values for t-tests based on sample size and significance levels.

Compute and understand the significance of t-statistic values.

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Definitions:

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