A major car manufacturer wants to test a new engine to determine if it meets new...

A major car manufacturer wants to test a new engine to determine if it meets new air pollution standards. The mean emission u, of all engines of this site must be approximately 20 ppm of carbon. if it is higher than that they will have to redesign parts of the engine. 10 engines are manufactured for testing purposes in the emission level of each is a determined. based on data collected over the years from a variety of engines it seems reasonable to assume the the mission levels are roughly normally distributed with standard deviation=3 parts per million of carbon

1) what is the value of the P value?

0.0175

less than 0.0001

0.2525

0.9825

2) The data result in an average of 22 parts per million what is the value of the test statistic?

z=2.11

z=6.67

z=0.667

z=-2.11

Solutions

Expert Solution

p-value = 0.0175

z = 2.11

orchestra answered 2 years ago

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