1)
Create a simple study:
Write a general research question- what are you interested in examining/studying?
Use a couple of sentences to create a simple study
What are your IV and DV?
Write a research hypothesis for this study
Write a null hypothesis for this study
Set the decision criteria using a two tailed test at alpha set to .05. What decision would you make if you have a p = .02?
Was the study statistically significant (that is, did your IV have a significant impact on the DV)
* please make sure to answer every part of the question above for full credit
* There is no need to make up numbers.
2) Sample mean is 48, population mean is 45, and standard deviation is 3:
• What is Cohen’s D, and is this a small, medium, or large effect?
3) Explain what Type I errors is. Please elaborate on your answers to earn full credit. Simply stating “rejecting a true null hypothesis” is not enough.
4) Provide two real-life examples of a Type I error. Please do not use the criminal trial example (person getting convicted vs. not), or the spam email example.
5) Explain what type II error is. Elaborate on your answer to demonstrate understanding.
6) Provide two real-life examples of a Type II error. Please do not use the criminal trial example (person getting convicted vs. not), or the spam email example.
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