Two Graphical Displays Are Given for a Set of Data $\begin{array} { r | r } 5 & 79 \\ 6 & 14 \\ 7 & 26 \\ 8 & 06 \\ 9 & 35 \\ 10 & 02 \end{array}$

question 40

Essay

Two graphical displays are given for a set of data. A hypothesis test is to be performed for the mean of the populationfrom which the data were obtained. Would it be reasonable to use a one-mean z-test? Explain your reasoning. Assumethat the population standard deviation is known.
-A normal probability plot and a stem-and-leaf diagram of the data are given below. $\begin{array} { r | r } 5 & 79 \\ 6 & 14 \\ 7 & 26 \\ 8 & 06 \\ 9 & 35 \\ 10 & 02 \end{array}$

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Definitions:

Operating Cost

Expenses associated with the day-to-day operations of a business, including rent, utilities, and payroll.

Injection Mold

A manufacturing process for creating parts by injecting material into a mold to form shapes and designs.

Competitor's Product

A product or service that is offered by one or more companies operating in the same market as another company, serving as alternatives or substitutes.

Operating Cost

The expenses associated with running a business's core operations on a day-to-day basis.