The tutor continues about hypothesis testing and type II errors. In yesterday’s post I began about hypothesis testing, type I, and type II errors. Specifically, a type II error would be continuing to believe the mean loaf mass is 454g, …

Statistics: 1-β : type II error and the power of a test Read more »

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The tutor explores the questions, from statistics, “What is a type I error? What is a type II error?”, with a couple of examples. In statistics, hypothesis testing is done when you think you know a value but want confirmation. …

Statistics: hypothesis testing: type I and type II errors Read more »

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The tutor shows a hypothesis testing example with a p-value. In yesterday’s post I brought up p-values. Today I’ll give an example: A population is believed to have mean μ0=42.5; a sample of 30 is taken with mean x=41.6, standard …

Statistics: hypothesis testing and p-values: why the table value is doubled when testing μ≠μ0 Read more »

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