# Statistical Analysis Techniques: ANOVA and Post-Hoc Tests

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A market researcher is interested in knowing the type of training that works best for DVD users. Thirty consumers are randomly selected from a population of known DVD owners (i.e., users). Ten users are trained by giving them the DVD user's manual and allowing them to read it. Another ten users are trained from a 30 minute DVD user training video. Another ten users are trained from a self-paced computer tutorial. The users are then timed in their ability to setup and program the DVD by performing a series of operations. Which statistical analysis technique should be used? What is the null hypothesis? Can the market researcher get an answer? Why or why not?

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##### Solution Summary

The solution discusses the statistical analysis technique such as ANOVA and post-hoc tests and all detailes involved in the test such as null hypothesis, p-value and so on.

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Since there are 3 groups with 10 users in each group, we can use Analysis of Variance (abbreviation: ANOVA) as the statistical analysis technique. We usually use ANOVA to test the means of three groups. Using this analysis, it would help us figure out which type of ...

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