Category: Mathematics Homework Help

I’m working on a statistics discussion question and need an explanation and answer to help me learn.

1. Use the Empirical Rule to find the 68% range and find the percentage of data points in that range.

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I’m working on a applied mathematics discussion question and need a sample draft to help me learn.

I have 3 discussion posts that I need an original post and one peer response. In the attached document is all three discussion questions and the one peer post that I have chosen to respond to.

1. No TI-89, 92, Voyage 200 graphing calculators allowed. You may use your calculator TI 83 or 84 plus to aid you in solving problems and checking your work. However, to earn full credit, you must show work and/or provide an explanation of how you arrived at your final answer (A correct answer without justificationor appropriate work is worth zero points).

2. Use Calculus II methods ONLY discussed in class. Any method borrowed from the internet that is not discussed in class will not be considered and/or graded.

3. Your work must be organized, and questions’ answers must be listed in order before scanning and uploading them to canvas. Neatness and completeness count.

4. Write answers in exact form

5. Do NOT write more than two questions on the same page, and do NOT write on the back of a page if you are using your own papers

6. Do not use graph paper to write your solution on it as it is hard to grade on canvas. Instead either use plain white paper or lined papers (I prefer if you print this document and write on it)

I need an explanation for this Statistics question to help me study.

Getting Started

In this activity, you will create a scatterplot, then graph the trend line with the regression equation and r² value. From this, you will interpret the slope and predict the corresponding y values.

Scatterplots are useful for determining whether a relationship exists between variables. This information can be valuable when making managerial decisions. For example, if your goal is to increase sales, then one of the factors you may consider is whether a relationship exists between sales and marketing dollars spent. If a relationship does exist between these two variables, as shown in Example 2, you may consider increasing the amount you spend on marketing. However, if there is no relationship, as shown in Example 1, you may choose not to spend more money on marketing.

Upon successful completion of the course material, you will be able to:

• Apply concepts and techniques to measure the relationship between two numeric variables.
• Explain how descriptive statistical tools can be used to analyze and solve managerial problems.

Resources

• File: WS2AppliedStatistics (Excel)

Instructions

1. Complete the problems in the file WS2AppliedStatistics (Excel). Follow the directions in the worksheet to create:
   1. A scatterplot
   2. A trend line of the plot showing the regression formula and r² value
   3. An interpretation of the slope and r² value
   4. A prediction of the y value based on the x value
2. Using Microsoft Word, write a brief paragraph explaining a scenario where you might employ the tools learned in this workshop to help solve a managerial problem in the workplace. Save your work and submit it along with your completed Excel file for this exercise.

1. In your textbook, Essentials of Statistics, read:
   1. Chapter 10, Section 1: “Correlation”
   2. Chapter 10, Section 2: “Regression”
2. Watch the video “Scatterplot Regression” that explains the Excel skills you will need to complete the practice problems. Note that the version of Excel presented in the video may differ from the one you are using.
3. Open the file WS2Practice (Excel). Follow the directions in the worksheet to create:
   1. A scatterplot
   2. A trend line of the plot showing the regression formula and r² value
   3. An interpretation of the slope and r² value
   4. A prediction y value based on the x value
4. Save your exercises as a single Excel file with one worksheet for each completed exercise.

Can you help me understand this Statistics question?

1. In your textbook, Essential Statistics, review:
   1. Chapter 10, Section 1: “Correlation”
   2. Chapter 10, Section 2: “Regression”
2. Review the video “Scatterplot Regression” that explains the Excel skills you will need to complete the practice problems. Note that the version of Excel presented in the video may differ from the one you are using.
3. Complete the 10 problems in the file WS2Homework (Excel). Each problem is on a separate tab (worksheet).
4. Save your exercises as a single Excel file with one worksheet for each completed exercise.

Correct answers are hidden.

Score for this attempt: 0 out of 10 *

Submitted Apr 30 at 11:16am

This attempt took 6 minutes.

Learn by Doing

Some features of this activity may not work well on a cell phone or tablet. We highly recommend that you complete this activity on a computer.

A list of StatCrunch directions is provided at the bottom of this text-box.

Context

Recall the following example: The average gestation period, or time of pregnancy, of an animal is closely related to its longevity—the length of its lifespan. Data on the average gestation period and longevity (in captivity) of 40 different species of animals have been recorded.

For the StatCrunch problem, you will analyze data for 40 species of animals in captivity.

Variables

animal: the name of the animal species
gestation: the average gestation period of the species, in days
longevity: the average longevity of the species, in years

The explanatory variable is average lifespan (longevity.) The response variable is length of pregnancy (average gestation period.)

Data

Download the animals (Links to an external site.) datafile. Then upload the datafile in StatCrunch. If you need a reminder about how to do this, review the list of StatCrunch directions below.

Prompt

In the first question you will produce a scatterplot in StatCrunch (with longevity as the explanatory variable and gestation as the response variable) and then use StatCrunch to calculate the correlation coefficient.

List of StatCrunch Directions

• Purchase StatCrunch (You only need to do this once.)
• Open StatCrunch
• Download Excel Data File
• Upload Excel Data File to StatCrunch
• Download StatCrunch Output Window (do not take screenshots; please use these directions)
• Upload Files into Your Stat-Class Folder in Canvas
• Embed Pictures in a Discussion Post (do not post attachments; please use these directions)
• Copy and Paste StatCrunch Text Output
• Create a Scatterplot in StatCrunch
• Produce the Correlation Coefficient in StatCrunch

Here is a PDF document with all StatCrunch directions (Links to an external site.).

Question 1Not yet graded / 10 pts

These directions assume you have downloaded the animals datafile and uploaded it in StatCrunch. If you have not, please see the Data section above.

1. Use StatCrunch to create a scatterplot with longevity as the explanatory variable and gestationas the response variable. (directions)

   Download the StatCrunch output window (your scatterplot) and upload it to your Stats-Classfolder in Canvas.

   Embed the .png file for your scatterplot in the text-box below.

2. Use StatCrunch to produce the correlation coefficient. (directions)
   Copy the Correlation “text” output and paste it in the text-box below. (directions)

Correlation between gestation and longevity is: 0.66323967

Correlation between gestation and longevity is:
0.66323967

Score: 0 out of 10

I reallly need help with my Calculus II Final.
I need a competent calculus tutor that can be available at 1pm on 5/7.
My game plan is to be talking with you prior to the examm. I’ll be joining the video chat when it opens and quickly send the final doc to you. You can look up the answers just make sure the work is complete and makes sense. I will pay good money for this and will tip well. I have been working fulltime and my lecture was during my work hours so I’m not as confident in taking this solo. Please help. I included a study guide

As a manager, you have the following data collected by your data analyst regarding the price and quantity demanded:

Price of One Shirt (P)

Demand (D)

2300

152

2000

159

1700

164

1500

171

1300

176

1200

180

1000

189

Note that you are asked to use a graphing utility in this assignment. A recommended online utility is https://www.desmos.com/calculator (Links to an external site.). It allows graphing and then copying and posting into a Word document.

1. Using a graphing utility, draw a scatter diagram with price as a function of demand.
2. Using a graphing utility, build a logarithmic model from the data.
3. Graph the logarithmic function in the scatter diagram.
4. Use the function you found above to predict the number of quantities that will be demanded if the price is $1750.
5. Use the function you found in #2 to predict the price, if the quantity demanded is 174.

Requirements:

1. Your paper should be 2-3 pages (not counting the title page and references page) and cite and integrate at least one credible outside source. The CSU Global Library (Links to an external site.) is a great place to find resources. Your textbook is a credible resource.
2. Include a title page, introduction, body, conclusion, and a reference page.
   1. The introduction should describe or summarize the topic or problem. It might discuss the general applications of the topic or it might introduce the unique terminology associated with the topic.
   2. The body of your paper should address the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.
   3. The conclusion should summarize your thoughts about what you have determined from your analysis in completing the assignment. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.