Sampling results and planned mean tests topic check
Practise sampling results and planned mean tests, check independently, and return later to review. This check covers selected skills, not the whole course topic.
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Learning goals
- Calculate a population-mean estimate from a specified independent sample
- Calculate an unbiased population-variance estimate from a specified independent sample
- Calculate an estimated standard error from a specified independent sample
- Calculate a sample mean's expectation from specified population moments
- Calculate a sample mean's variance from specified population moments
- Calculate a sample mean's standard error from specified population moments
- Calculate a sample-mean probability under a specified exact or approximate normal model
- Calculate a minimum sample size for specified normal-model precision
- Calculate a signed population-mean test statistic under a stipulated normal-test model
- Calculate a population-mean test p-value for a prespecified alternative
- Calculate all standardised critical boundaries for a planned population-mean test
- Calculate all sample-mean critical boundaries for a planned known-variance normal test
- Determine a population-mean test decision using the unrounded planned p-value and level
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This is for practice only and doesn’t count towards your course progress.
- Question count is checked before you start.
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Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
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Beyond the syllabus: optional enrichment that does not count towards your progress.
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After a check, practise the skills it showed you need to work on.
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Paper instructions
This is for practice only and doesn’t count towards your course progress.
- Question count is checked before you start.
- Feedback appears after you check each answer.
Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
Getting your questions…
Recent attempts
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No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
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When you feel ready, answer on your own to show what you can do.
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- Question count is checked before you start.
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Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
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No completed attempts are saved yet.
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After practising what your progress check showed, check those skills again.
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Your result can count towards your course progress.
- Question count is checked before you start.
- Feedback appears after you finish and submit.
Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
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Retention check
Come back later to see whether your learning has lasted.
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A scheduled review counts towards your course progress only when it is due.
- Question count is checked before you start.
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Your work
Without an account, unfinished answers stay in this tab. Signed in, they are saved on this device until the deadline shown when you start.
Getting your questions…
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No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
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