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2 Unit 2: Applied Mathematics A

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Question 140

The CO emissions of 24 cars have mean 0.25 g/km and standard deviation 0.06 g/km.

A 25th car, with a CO emission of 0.49 g/km, is added to the sample.

a.

Find the mean CO emission of the 25 cars.

[2]
b.

Find the standard deviation of the CO emissions of the 25 cars.

[3]
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2 Unit 2: Applied Mathematics A Questions

  1. A Level
  2. /Maths
  3. /2 Unit 2: Applied Mathematics A

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