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2 Unit AS 2: Applied Mathematics

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Question 252

For 18 randomly selected towns, the sample product moment correlation coefficient between mean daily temperature and daily electricity use is r=−0.492r=-0.492r=−0.492. A one-tailed critical value at the 5% significance level is -0.4000.

Carry out a test for negative correlation.

[4]
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2 Unit AS 2: Applied Mathematics Questions

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

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