(Solved) Math399 Week 7 Discussion: Rejection Region

Read/review the following resources for this activity:

  • Textbook: Chapter 9 (All Sections)
  • Lesson
  • Minimum of 1 scholarly source

Initial Post Instructions

After reviewing data from a sample, an inference can be made about the population. For example,

Find a data set on the internet. Some suggested search terms: Free Data Sets, Medical Data Sets, Education Data Sets.

  1. Introduce your Data Set and Cite the Source.
  2. What trends do you notice in your data set?
  3. Based on the trends and the history of your data set, make a claim. What kind of test (left, right, two tailed) would you have to complete?
  4. Explain the steps needed to complete the Hypothesis Test. What is needed?

Follow-Up Post Instructions

Respond to at least two peers or one peer and the instructor. Further the dialogue by providing more information and clarification.

  1. Based on the claim presented by your peer, state the null and alternative hypothesis and process you would take to determine if you would Reject or Fail to Reject Ho.
  2. Based on the data and history presented by your peer, state a new claim and explain why you think your claim is valid.

Writing Requirements

  • Minimum of 3 posts (1 initial & 2 follow-up)
  • APA format for in-text citations and list of references


This activity will be graded using the Discussion Grading Rubric. Please review the following link:

Course Outcomes (CO): 7

Due Date for Initial Post: By 11:59 p.m. MT on Wednesday

Due Date for Follow-Up Posts: By 11:59 p.m. MT on Sunday


The data set that I will discuss the average price (in US dollars) of gasoline. The data set spans 20 years from 2000 to 2020 and includes the average gasoline price for each month. The data set shows no apparent trend as gasoline’s price kept increasing and decreasing for each month. However, I was able to observe key price ranges within specific time frames. I noticed that gasoline’s price was generally under $2 per gallon for most of the months from 2000 to 2005. In 2005, gasoline prices for most of the months were between $2-4 per gallon…Please click the icon below to purchase the full answer at only $5.