Five Samples Were Taken, with Five Observations Each

question 54

Essay

Five samples were taken, with five observations each. The sample findings are listed below. The sample values represent service times in minutes.
a. Determine the control limits for the R-chart.
b. Would you conclude the R-chart is in statistical control and proceed to develop the x-bar chart?

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Definitions:

Placenta

This is an organ generated in the uterus while a woman is pregnant, facilitating the transfer of oxygen and nutrients to the fetus and the removal of waste substances from the fetal blood.

Fetal Alcohol Effect

A condition resulting from alcohol exposure during the mother's pregnancy, causing brain damage and growth problems in the child.

Diethylstilbestrol

A synthetic estrogen that was formerly prescribed to prevent miscarriages and other pregnancy complications before its connection to serious health risks in offspring was discovered.

Teratogens

Substances or elements that lead to fetal or embryonic developmental issues or congenital anomalies.