Sampling and hypothesis testing

There are 14 NRICH Mathematical resources connected to Sampling and hypothesis testing
Chance of that
problem

Chance of that

Age
16 to 18
Challenge level
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What's the chance of a pair of lists of numbers having sample correlation exactly equal to zero?
A well-stirred sample
problem

A well-stirred sample

Age
16 to 18
Challenge level
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Typical survey sample sizes are about 1000 people. Why is this?
Sleep: the silent killer
problem

Sleep: the silent killer

Age
16 to 18
Challenge level
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"Too much sleep is deadly" proclaimed the newspaper headline. Is this true?
Statistics - maths of real life
list

Statistics - maths of real life

Age
14 to 18
Challenge level
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This pilot collection of resources is designed to introduce key statistical ideas and help students to deepen their understanding.
Powerful hypothesis testing
problem

Powerful hypothesis testing

Age
16 to 18
Challenge level
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How effective are hypothesis tests at showing that our null hypothesis is wrong?
Hypothetical shorts
problem

Hypothetical shorts

Age
16 to 18
Challenge level
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Some short statements about hypothesis testing: are they true, false, or somewhere in between?
Chi-squared faker
problem

Chi-squared faker

Age
16 to 18
Challenge level
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How would you massage the data in this Chi-squared test to both accept and reject the hypothesis?