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2.5.7 Hypothesis test using Pearson's coefficient (A-level only)

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Question 19

A study of 20 students compares the time spent studying ( $t\,$ hours) and their final test scores ( $s\,$ marks).

The product moment correlation coefficient for the sample is $r = 0.435$ .

Stating your hypotheses clearly test, at the 2.5% significance level, whether there is a positive correlation between study time and test scores.

[4]

Markscheme

2.5.7 Hypothesis test using Pearson's coefficient (A-level only) Questions

A Level
Maths
2.5.7 Hypothesis test using Pearson's coefficient (A-level only)

49 exam-style questions on OCR A Level Maths 2.5.7 Hypothesis test using Pearson's coefficient (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

2.5.7 Hypothesis test using Pearson's coefficient (A-level only)

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2.5.7 Hypothesis test using Pearson's coefficient (A-level only)

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Question 19

A study of 20 students compares the time spent studying ( $t\,$ hours) and their final test scores ( $s\,$ marks).

The product moment correlation coefficient for the sample is $r = 0.435$ .

Stating your hypotheses clearly test, at the 2.5% significance level, whether there is a positive correlation between study time and test scores.

[4]

Markscheme

2.5.7 Hypothesis test using Pearson's coefficient (A-level only) Questions

A Level
Maths
2.5.7 Hypothesis test using Pearson's coefficient (A-level only)

49 exam-style questions on OCR A Level Maths 2.5.7 Hypothesis test using Pearson's coefficient (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.