Discussion: Probability in Real Life
By Day 3
- An explanation of how you would initially teach the concept of probability to one of the age groups, listed below, in a way they would understand. In other words, describe how you would initially present and explain the concept in order to create background knowledge and a basic understanding of probability. Be sure to Include the age group you chose in the Subject of your post.
- Elementary school students
- High school students
- Colleague/significant other
- An example of a demonstration you could use to illustrate the concept of probability to the age group you chose.
- An example of how this age group might use probability to make decisions in everyday life.
By Day 7
- State the dependent variable.
- Explain whether Lucy should use a one-tailed or a two-tailed z-test and explain why.
- State the null hypothesis in words (not formulas).
- State the alternative hypothesis in words (not formulas).
- Calculate the obtained z-score by hand. Describe your calculations (i.e., show your work).
- When alpha is set at .05, the critical value is ± 1.96. Should the null hypothesis be retained or rejected? Explain why.
- Are the results statistically significant? How do you know?
- What should Lucy conclude about Monica’s reading comprehension score in comparison to the population?
- Lucy is excited that she remembers how to compute a z-score and does some additional computations to find Monica’s z-score in math. You can find the information you need in the Weekly Data Set forum. Use it to calculate Monica’s raw math score by hand. Provide your calculations in your Assignment submission (i.e., explain your work).
Heiman, G. (2015). Behavioral sciences STAT (2nd ed.). Stamford, CT: Cengage.
- Chapter 5, “Describing Data with z-Scores and the Normal Curve” (pp. 68–84)
- Chapter 6, “Using Probability to Make Decisions about Data” (pp. 88–102)
- Chapter 7, “Overview of Statistical Hypothesis Testing: The z-Test” (pp. 106–123)
Weekly Data Set: Your instructor will post the data set that you will need for the week’s Assignment to the Weekly Data Set forum found in the course navigation area of the classroom.
Laureate Education (Producer). (2015d). Introduction to z-score [Video file]. Baltimore, MD: Author.Note: The video is available in this week’s Introduction section
Laureate Education (Producer). (2015k). Probability and introduction to inferential statistics [Video file]. Baltimore, MD: Author.Note: The video is available in this week’s Introduction section
Rugg, G. (2008). Using statistics: A gentle introduction [E-book]. Retrieved from http://site.ebrary.com/lib/waldenu/docDetail.action?docID=10229869&p00=statistics
StatSoft. (2015). Electronic statistics textbook. Retrieved from http://www.statsoft.com/textbook/elementary-statistics-concepts/