A quality engineer needs to check the diameter of a manufactured bolt produced b

Question

A quality engineer needs to check the diameter of a manufactured bolt produced by a factory. The engineer randomly took 50 samples. First he summarized the data by histogram and Box-and-Whisker Plot. Later on, based on th diameter of this manufactured bolt was not equal to a required diameter. data by computing central tendency (mean, median..., and variation (sample standard deviation), and graphically displayed the y histogram and Box-and-Whisker Plot. Later on, based on the sample information, he did hypothesis testing to find out that the mean This is an example that both descriptive and inferential statistics analysis are involved. Is this statement right? True False

Explanation / Answer

True

C. Since we select every 50th bolt at our conveninece, it is convenience sampling.

D. Pareto chart

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