Question

In: Statistics and Probability

Biodiesel fuel has a cloud point, the temperature at which the fuel becomes cloudy, of approximately...

  1. Biodiesel fuel has a cloud point, the temperature at which the fuel becomes cloudy, of approximately 13 0C . This clouding can lead to poor engine performance and can even cause an engine to stop completely. An industrial chemical company produces an additive designed to lower the cloud point of this type of fuel. A random sample of six different biodiesel fuels was obtained and the cloud point was measured for each. One gram of the chemical additive was mixed in with every fuel sample and the cloud point was measured again. The resulting data are

given in the following table ( temperature in 0C ).

Fuel

A

B

C

E

F

Before additive

11.7

12.9

14.2

11.3

12.4

After additive

10.3

10.7

14.1

11.2

12.1

Assume normality and conduct the appropriate hypothesis test to determine whether the additive lowers the mean cloud point in biodiesel fuel. Use α = 0.05.

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Expert Solution

orchestra answered 1 year ago
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