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

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Question 35

An estate agent believes there is a positive correlation between the size of a house's garden and its selling price.

She calculates the product moment correlation coefficient for a random sample of 25 houses and obtains $r = 0.352$ .

Carry out a suitable test to investigate the estate agent's belief at a 5% level of significance.

State clearly

your hypotheses
your critical value

[3]

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 35

An estate agent believes there is a positive correlation between the size of a house's garden and its selling price.

She calculates the product moment correlation coefficient for a random sample of 25 houses and obtains $r = 0.352$ .

Carry out a suitable test to investigate the estate agent's belief at a 5% level of significance.

State clearly

your hypotheses
your critical value

[3]

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.