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

question 84

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 sample standard deviation was 780 miles. Based on this information, the test statistic is approximately t = 1.000.

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Definitions:

Vacuum Tube

An electronic device that controls electric current flow through a vacuum in a sealed container, used in various applications before the advent of semiconductor devices.

Apple Computer

An American technology company that designs and manufactures consumer electronics, computer software, and online services, known for products like the iPhone, iPad, and Mac computers.

Steve Wozniak

Co-founder of Apple Inc., known for his contributions to the development of the personal computer in the late 1970s and early 1980s.

Programming Language

A formal language comprising a set of instructions that produce various kinds of output, used by programmers to develop software programs, scripts, or other sets of instructions for computers to execute.