Perform descriptive analysis, statistical analysis for below data.

Then draw histogram.

And perform hypothesis testing by

defining null hypothesis

define h1

Mu1

Mu2 and Mu d.

Below is the data of a car manufacturing company.

\begin{tabular}{|l|l|l|l|l|l|} \hline Metric & Month 1 & Month 2 & Month 3 & Month 4 & Month 5 \\ \hline Material waste & 14.2% & 12.8% & 16.5% & 13.7% & 14.9% \\ \hline Order lead time & 11 days & 9 days & 10 days & 8 days & 7 days \\ \hline Defect rate & 7.8% & 9.1% & 8.4% & 6.5% & 7.2% \\ \hline Inventory accuracy rate & 84% & 86% & 88% & 85% & 87% \\ \hline Customer satisfaction & 72% & 74% & 71% & 73% & 75% \\ \hline \end{tabular}