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4.6 Statistical hypothesis testing (A-level only)

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Question 10

David wants to investigate if there is a correlation between total weekly rainfall and total weekly hours of sunshine in his town.

a.

Suggest a suitable null and alternative hypothesis for a two-tail test.

[2]
b.

David takes a sample of 20 weeks and finds a product moment correlation coefficient of 0.48.

Carry out the hypothesis test at the 5% significance level.

[2]

4.6 Statistical hypothesis testing (A-level only) Questions

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