AutoSave . OFF 1 STA 3215 Deliverable 2 - Tutoring on the Normal Distribution Q Home Insert Draw Page Layout Formulas Data Review View Tell me Share Comments Calibri (Body) * 11 AA" ab Wrap Text v General Insert v Ex AY - O. Ex Delete v Paste BIU E E Merge & Center v $ ~ % " Conditional Format Cell Sort & Find & Analyze Sensitivity Formatting as Table Styles Format v v Filter Select Data A12 X v fx A D E F G H K L M N 0 P Q R S T U v w X Z AA Instructions: The following questions on the next six tabs are shown to you by a student who is asking for help. Your job is to help the student walk through the problems by 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, and explain why you took each step. Instructions - Read First Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 + - + 100%AutoSave . OFF 1 STA 3215 Deliverable 2 - Tutoring on the Normal Distribution Q Home Insert Draw Page Layout Formulas Data Review View Tell me Share Comments Calibri (Body) * 11 AA ab Wrap Text v General Insert v ZNAY - O. Ex Delete v Paste BIU E E Merge & Center v $ ~ % " Conditional Format Cell Sort & Find & Analyze Sensitivity Formatting as Table Styles Format v Filter Select Data N21 fx A C D E F G H K L M N 0 P Q R S T Assume that a randomly selected subject is given a bone density test. Those tests follow a standard normal distribution. Find the probability that the bone density score for this subject is between -1.25 and 0.54. Show your calculations using Excel functions in the area to the right of this text box and answer the problem with explanations un below. 10 11 12 13 24 25 26 27 28 29 30 31 32 23 Instructions - Read First Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 + - + 131%AutoSave . OFF 1 STA 3215 Deliverable 2 - Tutoring on the Normal Distribution Q Home Insert Draw Page Layout Formulas Data Review View Tell me Share Comments Calibri (Body) 11 AA ab Wrap Text v General Insert v Ex AY - O. 4 Ex Delete v Paste BIU E E Merge & Center v $ ~ % " Conditional Format Cell Sort & Find & Analyze Sensitivity Formatting as Table Styles Format v v Filter Select Data N7 X V fx A D E F G H K L M N 0 P Q R S T U v w X Z AA The U.S. Airforce requires that pilots have a height between 64 in. and 77 in. If men's heights are normally distributed with a mean of 69.1 in. and a standard deviation of 5.3 in, find the percentage of men that meet the height requirement. Show your calculations using Excel functions in the area to the right of this text box and answer the problem with explanations below. Instructions - Read First Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 + - + 100%Q AutoSave . OFF 1 STA 3215 Deliverable 2 - Tutoring on the Normal Distribution Home Insert Draw Page Layout Formulas Data Review View Tell me Share Comments Insert v Calibri (Body) 11 AA" ab Wrap Text v General Ex AY - O. 4 Ex Delete v $ ~ % " Conditional Format Cell Sort & Find & Analyze Sensitivity Paste BIUVE E E Merge & Center v Formatting as Table Styles Format v v Filter Select Data P16 X V fx v w X Z AA A C D E F G H K M N 0 P Q R S T U Women's pulse rates are normally distributed with a mean of 77.5 beats per minute and a standard deviation of 11.6 beats per minute. What is the z-score for a woman having a pulse rate of 68 beats per minute? Student's incorrect answer: Let Z = _ H (77.5 - 68) 11.6 11 Z = 0.82 12 13 Identify where the student went wrong when solving the problem above. Show how to correctly calculate the answer using Excel in the 14 area to the right of this text box. Finish the problem by stating how to correctly set up the problem and solve it below. 15 16 17 18 19 20 Instructions - Read First Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 + - + 100%Q AutoSave . OFF 1 STA 3215 Deliverable 2 - Tutoring on the Normal Distribution Share Comments Home Insert Draw Page Layout Formulas Data Review View Tell me Insert v Calibri (Body) 11 AA ab Wrap Text v General Ex AY - O. Ex Delete v Sort & Find & Analyze Sensitivity Paste BIUVE E Merge & Center v $ ~ % " Cell E Conditional Format Formatting as Table Styles Format v v Filter Select Data A7 4 X V fx E F G H K L M N 0 P Q R S T U v w X Z AA A B C D

What is the cumulative area from the left under the curve for a z-score of -0.78? What is the area on the right of that z-score? Hint: You will have two answers (one for the left and one for the right). Student's partially finished answer: The first part is to find the cumulative area from the left under the curve for a z-score of -0.78. This means that I need to find the probability that a z-score is less than -0.78. Show your calculations using Excel functions in the area to the right of this text box and finish answering the problem with explanations below. 11 13 14 15 16 17 Instructions - Read First Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 + - + 100%AutoSave . OFF 1 STA 3215 Deliverable 2 - Tutoring on the Normal Distribution Q Home Insert Draw Page Layout Formulas Data Review View Tell me Share Comments Calibri (Body) * 11 AA ab Wrap Text v General Insert v Ex AY - O. Ex Delete v Paste BIU BY OvAv E Merge & Center v $ ~ % " Conditional Format Cell Sort & Find & Analyze Sensitivity Formatting as Table Styles Format v v Filter Select Data 09 A C D E F G H K L M N 0 P Q R S T U v w X Z AA If the area under the standard normal distribution curve is 0.5883 from the right, what is the corresponding z-score? Student's incorrect answer: We plug in "=NORM.S.INV(0.5883)" into Excel and get a z-score of 0.22. Identify where the student went wrong when solving the problem above. Show how to correctly calculate the answer using Excel in the area to the right of this text box. Finish the problem by stating how to correctly set up the problem and solve it below. 11 12 13 14 15 16 Instructions - Read First Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 + - + 100%AutoSave . OFF 1 STA 3215 Deliverable 2 - Tutoring on the Normal Distribution Q Home Insert Draw Page Layout Formulas Data Review View Tell me Share Comments Insert v Calibri (Body) * 11 AA ab Wrap Text v General Ex AY - O. Ex Delete v Sort & Sensitivity Paste $ ~ % " Conditional Format Find & Analyze BIU BY OvAv E Merge & Center v Cell Formatting as Table Styles Format v v Filter Select Data P17 X V fx R S T U v w X Z AA A C D E F G H K M N 0 P Q

A research shows that the Richter scale magnitudes of earthquakes are normally distributed with a mean of 1.67 and a standard deviation of 0.385. Earthquakes with magnitudes less than 2.00 are considered "microearthquakes" that humans do not feel. What percentage of earthquakes fall into this category? Student's partially finished answer: We need to find the probability that earthquakes fall into the microearthquake category. The first step is to find the probability that the Richter scale is less than 2.00 Show your calculations using Excel functions in the area to the right of this text box and finish answering the problem with explanations 11 below. 13 14 15 16 17 18 19 Instructions - Read First Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 + - + 100%