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2.5.11 Inference using a correlation coefficient (A-level only)

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Question 27

The daily sunshine hours and the maximum wind speed on 30 days are recorded.

a.

Suggest a null and alternative hypothesis for a two tailed test to investigate whether there is a correlation between sunshine hours and wind speed.

[2]
b.

The product moment correlation coefficient is calculated to be r=−0.32r = -0.32r=−0.32.

Test your hypotheses at the 10% significance level.

[2]

2.5.11 Inference using a correlation coefficient (A-level only) Questions

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