## Description

**Scenario**

Frank has only had a brief introduction to statistics when he was in high school 12 years ago, and that did not cover inferential statistics. He is not confident in his ability to answer some of the problems posed in the course.

As Frank's tutor, you need to provide Frank with guidance and instruction on a spreadsheet he has partially filled out. Your job is to help him understand and comprehend the material. You should not simply be providing him with an answer as this will not help when it comes time to take the test. Instead, you will be providing a step-by-step breakdown of the problems including an explanation on why you did each step and using proper terminology.

**What to Submit**

To complete this assignment, you must first download the spreadsheet, and then complete it by including the following items on the spreadsheet:

Deliverable 2 - Tutoring on the Normal Distribution.xlsx

**Incorrect Answers**- Correct any wrong answers. You must also explain the error performed in the problem in your own words.**Partially Finished Work**- Complete any partially completed work. Make sure to provide step-by-step instructions including explanations.**Blank Questions**- Show how to complete any blank questions by providing step-by-step instructions including explanations.

Your step-by-step breakdown of the problems, including explanations and calculations performed, should be present within the Excel spreadsheet provide

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## Explanation & Answer

View attached explanation and answer. Let me know if you have any questions.

Instructions: The following questions on the next six tabs are shown to you by a student who is asking for help. Your job is

showing the student how to solve each problem in detail. You are expected to explain all of the steps in your own words.

Key:

- This problem is an incorrect. Your job is to find the errors, correct the errors, and explain what they did wrong.

- This problem is partially finished. You must complete the problem by showing all steps and explain your corrections

- This problem is blank. You must start from scratch and explain how you will approach the problem, how you solve it,

who is asking for help. Your job is to help the student walk through the problems by

of the steps in your own words.

plain what they did wrong.

explain your corrections.

ch the problem, how you solve it, and explain why you took each step.

Assume that a randomly selected subject is given a bone density test. Those tests follow a standard normal dis

the probability that the bone density score for this subject is between -0.78 and 1.94.

Show your calculations using Excel functions in the area to the right of this text box and answer the problem with exp

Answer:

Let 'z' represent the variable bone density score.

First we need to find the cumulative area under the curve for the z-score less than 1.94. For this, we plug in "=NOR

into the excel.

or, P(z < 1.94) = 0.974 (rounded to 3 decimal)

Next, we need to find the cumulative area under the curve for the z-score less than -0.78. For this, we plug in "=NO

0.78)" into the excel.

or, P(z < -0.78) = 0.218 (rounded to 3 decimal)

Now, to find the probablity that the z-score lies between -0.78 and 1.94, we need to find...