Chapter 2: One Mean

In groups of 2-3, discuss the design of an experiment that could be analyzed using the methods discussed in Chapter 2 (inference of one mean). You do not need to conduct the experiment, but it should be designed so that it is feasible. Discuss and record the following:

• Research question

• Variable of interest, and type of variable

• Parameter (definition and symbol)

• Null and alternative hypotheses (in words and symbols)

• Statistic

  • Note: you will need two values here (i.e., sample mean and sample standard deviation)

• Sample and sample size

  • Note any possible sources of bias. How would you conduct the study with SRS, and how would you practically conduct the study?

• In a spreadsheet program (e.g., Excel), write what the first few observations would look like.

• Calculate the standardized statistic and state whether it Rejects or Fails To Reject the null hypothesis

• What conclusion would you state given the standardized statistics?

• What type of error might your study have made? In context, what does it mean?