# MATH 225N Week 5 Discussion: The Normal Distribution

## MATH 225N Week 5 Discussion: The Normal Distribution

MATH 225N Week 5 Discussion: The Normal Distribution

MY TAKE ON “BACKWARD( S ) NORMAL” PROBLEMS

Hi Friends !!

Perhaps the most fundamental formula in the entire course is the formula

But sometimes we have to use algebra to solve this formula for  x  ( to isolate  x  )  and use that “version” of the formula.

cross multiply now:

technically do a distributive step now:

add mu to both sides and then rewrite the equation:

Please see the following slides here to get a look at how this formula is used in problems and exercises.

Of course in actual practice we use the Week 5 Excel spread sheet calculator or the TI 84+ Graphing Calculator model to actually implement this formula and get answers ( meaning that we get the answers to this type problem / exercise without even having to know the formula that we found just a little further above ) but nonetheless this Post here and the following slides do help to build overall understanding and confidence with what is going on with this type problem / exercise in Week 5 of our course here.

Thanks Friends and Best Wishes and Good Luck too !!

### Required Resources

Read/review the following resources for this activity:

• OpenStax Textbook: Chapter 2, 6, 7
• Lesson
• Minimum of 1 scholarly source

### Initial Post Instructions

Many variables in medicine follow a normal distribution where there are approximately an equal number of values below the mean as above the mean. Describe two variables that you work with that would probably follow a normal distribution. Also note which of the two variables would be likely to have a larger standard deviation and why.

### 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.

### Writing Requirements

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

Course Outcomes (CO): 5

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

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### Click here to ORDER an A++ paper from our Verified MASTERS and DOCTORATE WRITERS:MATH 225N Week 5 Discussion: The Normal Distribution

For grading purposes, this particular discussion posting area runs from Sunday Jan 31 through Sunday Feb 7, inclusively.

We explore the so-called Normal Distributions this Week. This includes normal probability distributions, the standard normal distribution, the standard normal distribution Table, the concept of continuous distributions, sampling distributions, and the Central Limit Theorem.

Please don’t forget to use an “outside” resource as part of the content and documentation for your first Post – the Post which is due on or before Wednesday of the Week – the Post where you make the most major contribution to the Weekly discussion posting area and attempt to address the discussion prompts / cues for the Week. It could possibly include a web site that you discovered on the internet at large, so long as the web site is relevant and substantial and does not violate the Chamberlain University policy for prohibited web sites, and so forth. It could possibly include referenc

s / resources that you discover through making use of the online Chamberlain University Library ( please click Resources along the left and then click Library to discover the link to the Chamberlain University online Library ) . 🙂

Check out the link below for some information about the so-called Standard Normal Distribution.  After that page comes up also click on the normal distribution link from that page to see some more useful and relevant information for our Week 5 concerns and COs.

This is one kind of an example of using an “outside” source / resource to add to what is revealed in our Weekly Lesson in Modules and in our Weekly text book reading.

Please don’t forget to look over the Graded Discussion Posting Rubric each Week to be certain that you are meeting all of the Frequency requirements as well as all of the Quality requirements for graded discussion posting each Week.

If you have any questions about anything, please do not hesitate to post in the Q & A Forum discussion posting area or to send me a direct e-mail message to  [email protected]

Thanks Friends and Good Luck !  Work hard and learn a lot !!

Sincerely,  Mr. Smith     Chamberlain University     Math, Statistics, and Quantitative Research