R-12 to R-134a Conversions Are Being Discussed

question 69

Multiple Choice

R-12 to R-134a conversions are being discussed. Technician A says the original receiver/dryer or accumulator should not be replaced. Technician B says permanently install conversion fittings using a thread-locking chemical. Who is correct?

• A)A only
• B)B only
• C)both A and B
• D)neither A nor B

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Definitions:

Confidence Interval

A set of values, taken from data samples, which is predicted to include the value of an unspecified population attribute.

Standard Deviation

Standard deviation is a statistical measure of the dispersion or variability within a data set, indicating how much individual data points deviate from the mean.

Normal Distribution

A bell-shaped frequency distribution curve that is symmetric about the mean, showing that data near the mean are more frequent in occurrence.

Exponential Distribution

The exponential distribution is a continuous probability distribution used to model the time or space between events in a Poisson process.