TABLE 10-13 The Amount of Time Required to Reach a Customer Service

question 65

Short Answer

TABLE 10-13
The amount of time required to reach a customer service representative has a huge impact on customer satisfaction. Below is the Excel output from a study to see whether there is evidence of a difference in the mean amounts of time required to reach a customer service representative between two hotels. Assume that the population variances in the amount of time for the two hotels are not equal.

-Referring to Table 10-13, what is the 95% confidence interval estimate for the difference in the two means if the two population variances are assumed to be the same?

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Definitions:

Scoria Cone

A type of volcanic cone formed from fragments of lava ejected from a single vent, typically with steep sides and a bowl-shaped crater.

Shield Volcano

A broad, gently sloping volcano built from highly fluid lava flows, often found in Hawaii and other Pacific regions.

Composite Volcano

A type of volcano built by the eruption of both lava flows and explosive material, resulting in a layered or composite structure, often found at convergent plate boundaries.

Volcanic Cinders

Small, porous fragments of lava that solidify before hitting the ground, typically ejected during explosive volcanic eruptions and forming cinder cones.