Specialist Mathematics · Unit 4 · Statistical inference · Confidence intervals for means
Understand the concept of an interval estimate for a parameter associated with a random variable.
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Understand and use the relationship between margin of error, level of confidence and sample size.
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Use 𝑥̅ and 𝑠 to estimate 𝜇 and 𝜎, to obtain approximate intervals covering desired proportions of values of a normal random variable and compare with an approximate confidence interval for 𝜇.