Lube-Tech Is a Major Chain Whose Primary Business Is Performing

question 126

True/False

Lube-Tech is a major chain whose primary business is performing lube and oil changes for passenger vehicles. The national operations manager has stated in an industry newsletter that the mean number of miles between oil changes for all passenger cars exceeds 4,200 miles. To test this, an industry group has selected a random sample of 100 vehicles that have come into a lube shop and determined the number of miles since the last oil change and lube. The sample mean was 4,278 and the standard deviation was known to be 780 miles. Based on this information, the p-value for the hypothesis test is less than 0.10.

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Definitions:

Surgical Complications

Unexpected problems or adverse events that can occur during or after surgery, which can affect the outcome or recovery of the patient.

Preoperative Phase

The period before a surgical operation begins, involving patient assessments and preparation for surgery.

Sterile Field

A specific area, free of all microorganisms, used during medical procedures to prevent infection.

Surgical Scrub

A thorough cleaning of the hands and arms with antimicrobial soap by surgical personnel to reduce the risk of infection.