11.2 Independent samples t-test for a difference of sample means

The Fibobelly data from 10.1 was used to illustrate an independent sample t-test for a difference of sample means. 

spreadsheet


The line at 1.4992 illustrates a predicted population mean between the two confidence intervals that neither sample is expected to be able to have as a poulation mean.

Desmos

A Desmos file generates the same p-value using the ttest function. The Desmos file also makes use of being able to generate t-critical and the t-ditribution in the image. 

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