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level Mathematics Practice Paper H Statistics and Mechanics Mark Scheme

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level Mathematics Practice Paper H Statistics and Mechanics Mark Scheme Scheme Marks AOs Pearson Progression Step and Progress descriptor a A statistic that is calculated from sample data in o... rder to test a hypothesis about a population. B1 1.2 5th Understand the language of hypothesis testing. (1) b H0 : = 0, H1 : ≠ 0 p-value < 0.05 There is evidence to reject H0 There is evidence (at 5% level) of a correlation between the daily mean temperature and daily mean pressure. B1 M1 A1 2.5 1.1b 2.2b 6th Carry out a hypothesis test for zero correlation. (3) c Two sensible interpretations or observations. For example, Two distinct distributions Similar gradients of regression line. Similar correlations for each season. Lower temperaure in autumn. More spread for the daily mean pressure in autumn. Scheme Marks AOs Pearson Progression Step and Progress descriptor a A statistic that is calculated from sample data in order to test a hypothesis about a population. B1 1.2 5th Understand the language of hypothesis testing. (1) b H0 : = 0, H1 : ≠ 0 p-value < 0.05 There is evidence to reject H0 There is evidence (at 5% level) of a correlation between the daily mean temperature and daily mean pressure. B1 M1 A1 2.5 1.1b 2.2b 6th Carry out a hypothesis test for zero correlation. (3) c Two sensible interpretations or observations. For example, Two distinct distributions Similar gradients of regression line. Similar correlations for each season. Lower temperaure in autumn. More spread for the daily mean pressure in autumn. [Show More]

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