# Question: a researcher considering the possible effect of two anaesthetic treatments...

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A researcher considering the possible effect of two anaesthetic treatments on the time between heartbeats of anesthetised dogs (called the R-R Interval) has the following data. It shows the R-R Interval (in milliseconds) for 19 dogs under two different treatments and the difference between these treatments for each dog.

Use a paired t-test to state whether the null hypothesis is accepted or rejected (at a 5% significance level) for the scenario you determined in part iii above. Identify the analysis used, state what led you to your decision on why a paired t test is appropriate and draw a conclusion in the context of the question.