Which of the Following Statements Is LEAST-Likely True

question 11

Multiple Choice

Which of the following statements is LEAST-Likely true?

• A)Friction occurs between the piston rings and cylinder walls.
• B)Low-tension piston rings were introduced in the mid-1980s to improve fuel economy.
• C)Compression rings account for about 60% of the total drag on a cylinder wall, and the oil ring accounts for 20%.
• D)Cast iron rings are used in re-ring jobs when the cylinder walls have not been re-bored.

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Definitions:

Null Hypothesis

A hypothesis used in statistics that suggests there is no significant difference or effect, typically to be tested against an alternative hypothesis.

Alternative Hypothesis

The hypothesis that proposes a difference or relationship exists between two variables, contrasting the null hypothesis.

Population Parameter

A numerical value that represents a characteristic of a population.

Type I Error

The flawed dismissal of an actual null hypothesis, popularly identified as a "false positive."