Test a correlation coefficient - official syllabus scenario
Read the official-HL feature being tested first. A environmental sensor correlation test has sample correlation \(r=0.52\) and \(n=21\). Calculate the t statistic for testing \( ho=0\). Enter the requested value and choose the interpretation that matches the result.
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Worked practice: result and interpretation
Calculate the requested result first, then choose the interpretation that follows from it.