statistical analysis 4 1

The discussion requires a minimum of 300 words, 3 scholarly sources, including the textbook. Make sure that you use APA style with your references. Under no circumstances use any direct quotes. Any directly quoted or copied material will result in a zero for the assignment. Let’s be sure to write it in own work 100% and give appropriately when using someone’s else work.

Reference for textbook attached:

Mirabella, J. (2011). Introduction to Statistics. Nashville, TN: Savant Learning Systems.

Define One Sample Hypothesis testing. Choose a variable in your own organization or another organization in which you are interested. Write a hypothesis that could be tested and which would provide useful information if it was. Briefly describe the test you would use (hint: are you testing a mean or a proportion?) and the sample you would select. Your null would be one number (if for mean) or a percentage (if for proportion). Lastly discuss the direction of your test (two-tailed, upper-tailed, or lower- tailed).

1,500 word count and there is a total of 3 questions each (not including in-text citation and references as the word count), a minimum of 4 scholarly sources are required in APA format. For the 4 scholarly sources, one from the textbook that’s posted below and the other two from an outside source . Let’s be sure to write it in own work 100% and give appropriately when using someone’s else work. Under no circumstances use any direct quotes. Any directly quoted or copied material will result in a zero for the assignment.

Reference for textbook attached:

Mirabella, J. (2011). Introduction to Statistics. Nashville, TN: Savant Learning Systems.

Use the Student_Data which consists of 200 MBA students at Whatsamattu U. It includes variables regarding their age, gender, major, GPA, Bachelors GPA, course load, English speaking status, family, and weekly hours spent studying.

1 It is pretty common across most schools to find the grades at the MBA level divided between A’s and B’s. As such, you expect the mean GPA to be around 3.50. Using the sample of 200 MBA students, conduct a one-sample hypothesis test to determine if the mean GPA is different from 3.50. Use a .05 significance level.

2 Assume you read in the Whatsamatta U website that the average age of their MBA students is 45. Is this really true or have they failed to update this correctly? You think it is far less because there have been a lot more students going straight from their Bachelors to their Masters since the economy is so bad. You took a sample of 200 students (in the data file). Conduct a one-sample hypothesis test to determine if the mean age is less than 45. Use a .05 significance level.

3 You have heard from idle chatter that most students don’t declare a major in their MBA programs. You took a sample of 200 students (in the data file). Conduct a one-sample hypothesis test to determine if the proportion without a major is greater than 50%. Use a .05 significance level.

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