From the course: Learning Minitab (version Minitab 17)

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Compare means using student's t-tests

Compare means using student's t-tests - Minitab Tutorial

From the course: Learning Minitab (version Minitab 17)

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Compare means using student's t-tests

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- [Voiceover] In this movie, I will show you how to compare means using the student t-test. Say we have this processing time data for four offices, A, B, C, and D, and let's say that there is a corporate target of 20, so let's compare the performance of A to this target. So we need to run a one-sample t-test, but before we do that, we have to check for normality of data. So Stat, basic stats. Normality test on A, and we see the P-value is very high, and the plot looks very normal. With a P-value of 0.975, we can conclude that the data is normal, so let's run the one-sample t-test. Stat, basic stats, 1-Sample t. Our data is in column A, and we want to perform a hypothesis test against a target of 20. Go to Options, and we can specify our test in more detail. In this case, not equal to is fine for us. OK, and go to Graphs. Let's choose the boxplot so we can see what's going on. OK and OK. So in the boxplot, we see that the confidence interval is also drawn, and it does not overlap with…

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