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b An engineer studying whether a downhill section of a highway needs to be widened, measures the speed of motorists travelling along the highway. A

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b An engineer studying whether a downhill section of a highway needs to be widened, measures the speed of motorists travelling along the highway. A sample of 90 cars gives a mean speed of 110.2 km/h and a standard deviation of 6 km/h. (Ill) Which of the following best explains what making a Type 1 error would mean in the context of the test In Part (II). 0 false alarm 0 positive alarm

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