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Math 120 AMU week 7 forum Hypothesis test Introduction to Statistics American Military University

Hi Everyone,

Read the sections on Hypothesis Testing in your book.

Click on these links

college.cengage.com/mathematics/blackboard/shared/content/video_explanations/video_wrapper.html?filename=v01090a

college.cengage.com/mathematics/blackboard/shared/content/video_explanations/video_wrapper.html?filename=v01090b

/college.cengage.com/mathematics/blackboard/shared/content/video_explanations/video_wrapper.html?filename=v02262a

 

Think of an application where you can use hypothesis testing to test a premises. Use .05 for your alpha and give the scenario. Set up the problem, solve it and state your conclusions. See the example below. Then respond to at least 2 classmates.

First post: First summarize the 3 videos and make a note of what you learned. Then create your own hypothesis test.  For instance, XYZ car company boast that it’s new car Eco Auto gets at least 59 miles to the gallon. Given a sample mean of 57 and a standard deviation of 3.5 where 35 people were tested, find the z value and p score. Hint: Use the P value calculator in the announcements to find the p score. Note: On this one you do not need to attach an excel spreadsheet.

Student Response:

Ho: u>=59

Ha: u<59

You can put this in excel or your calculator

= (59-57)/(3.5/35^.5)

=3.38

or enter this in excel

=norm.dist(59,57,3.5/35^.5,true)

and hit enter

Then take that value which we will call A

and type this in excel

=norm.s.inv(A)

and hit enter

Using the z to p value calculator with a=.05, 1 tailed test and z=3.38, you get

p=.000362

Since p < .05, you reject the null

You will want to respond to 2 classmates. Keep the conversation going by mentioning the video and tell what you learned. Also mention how the hypothesis test helped you.

 

Instructions: Your initial post should be at least 250 words. Please respond to at least 2 other students. Responses should be a minimum of 100 words and include direct questions.

To earn full credit for this forum, you must respond to at least two (2) of your peers and post your initial post by Thursday.

Initial Post Due: Thurday, by 11:55pm, ET
Responses Due: Sunday, by 11:55pm, ET.

*Only during the first week of class are assignments not due until 11:55 p.m., ET, Sunday. After Week 1, all initial posts will be due Thursday, by 11:55pm, ET.

Rubric for grading forums:   60% – Initial Post; 20% – Each Response up to 2 responses

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