A market researcher is interested in knowing the type of tra

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?

Solution

The hypothesis here is

H0: the average time of the 3 groups are the same

H1: atleast one groups\' avergae is different.

Since there are more than 2 groups, we use ANOVA method here.

By using this method, the market researcher can get an answer to the question.