(Situation D) a Walk-In Freezer Thermostat at a Restaurant Is $\text { Day }$

question 83

Essay

(Situation D) A walk-in freezer thermostat at a restaurant is set at 5°F. Because of the perishability of the food in the freezer, the restaurant manager has decided to begin monitoring the temperature inside the freezer. The managers used a precision thermometer to take sample temperature readings at five randomly chosen times per day for 10 days. The data are presented below.

$\text { Day }$ $\quad$ $\quad$ $\text { Temperature }\left(^{\circ}\right. \text { F) }$
$\begin{array}{rrrrrr}\hline 1 & 5.22 & 5.29 & 5.11 & 4.95 & 4.78 \\2 & 4.40 & 4.41 & 4.63 & 6.03 & 4.83 \\3 & 5.11 & 5.43 & 4.90 & 4.55 & 5.23 \\4 & 5.65 & 4.24 & 5.09 & 4.82 & 5.50 \\5 & 4.68 & 5.92 & 4.71 & 4.67 & 4.75 \\6 & 5.01 & 5.26 & 6.10 & 5.20 & 5.25 \\7 & 5.20 & 4.99 & 5.15 & 5.96 & 5.35 \\8 & 4.30 & 4.91 & 5.03 & 4.97 & 4.80 \\9 & 5.45 & 5.62 & 6.11 & 5.13 & 4.90 \\10 & 5.06 & 5.13 & 4.95 & 5.59 & 5.80 \\\hline\end{array}$

-Calculate the upper and lower control limits for the R-chart.

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Definitions:

Stabilizing Selection

A type of natural selection that favors the average individuals in a population, reducing variation around the mean phenotype.

Antibiotic Resistance

The ability of bacteria to withstand the effects of antibiotics, often through genetic mutations or acquisition of resistance genes.

Phenotype Frequency

Phenotype frequency refers to the proportion of individuals in a population that exhibit a specific observable trait or phenotype.

Temporal Isolation

A prezygotic reproductive isolating mechanism in which genetic exchange is prevented between similar species because they reproduce at different times of the day, season, or year.