Independent Random Samples Taken at Two Local Malls Provided the Following

question 51

Short Answer

Independent random samples taken at two local malls provided the following information regarding purchases by patrons of the two malls.
$\begin{array}{lcc}&\text { Hamilton Place }&\text { Eastgate }\\\text { Sample Size } & 85 & 93 \\\text { Average Purchase } & \$ 143 & \$ 150 \\\text { Standard Deviation } & \$ 22 & \$ 18\end{array}$ We want to determine whether or not there is a significant difference between the average purchases by the patrons of the two malls.
a. Give the hypotheses for the above.
b. Compute the test statistic.
c. At 95% confidence, test the hypotheses.

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Definitions:

Lateral Excursion

The side-to-side movement of the mandible, which is important in the grinding motion of chewing.

Plantar Flexion

The action of reducing the angle between the bottom of the foot and the back of the leg, similar to when the toes are pointed.

Dorsiflexion

The action of raising the foot upwards towards the shin, decreasing the angle between the dorsum of the foot and the leg.

Inversion

Inversion in genetics refers to a chromosome rearrangement in which a segment of a chromosome is reversed end to end, potentially affecting gene function and expression.