Description
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.
Explanation & Answer
3.2 x 2 -2x +1.3 =0
2x= 7.7
x= 3.85
Answer: x = 3.85. (approx.3.9)
Completion Status:
100%
Review
Review
Anonymous
Great content here. Definitely a returning customer.
Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4
24/7 Homework Help
Stuck on a homework question? Our verified tutors can answer all questions, from basic math to advanced rocket science!
Most Popular Content
MM305M3 Purdue Global University Inferential Statistics Paper
Part 2:Show your work and explain your process for determining the solution for each of these problems on a word document ...
MM305M3 Purdue Global University Inferential Statistics Paper
Part 2:Show your work and explain your process for determining the solution for each of these problems on a word document with the solution given below the problem. If Excel was used, please indicate that as well on the word document. A word document and/or the Excel Workbook (if used) should be submitted to the Dropbox with labels on the worksheets to indicate which problem is being evaluated.All answers should be clearly indicated. Written explanation, reasoning, and rationale should use complete sentences. Pollingreport.com lists several public opinion polls. Search the site and find a poll where the sample size and margin of error are given. Try to find a poll dealing with a topic in your profession or one in which you are really interested.Determine the following information for the selected poll results and include in your paper.State the URL for the website. State the poll question, the sample size n, and the margin of error (also known as sampling error). See Example and CA Video Starter in this module’s LiveBinder.Calculate confidence interval estimates for the proportionState the confidence interval using the MoE. What does this confidence interval estimate?Use the Confidence Interval template (found in this module’s LiveBinder) to calculate the confidence interval based on the sample size and the number of successes (the proportion you are interested in). Use a confidence level of 95%.What is the calculated confidence interval? How does this compare to the interval in part a using the poll’s margin of error?Compute sample size needed for the confidence interval of the proportion.Calculate the sample size needed for the given margin of error and see if the poll had enough people surveyed. Use the sample size template (found in this module’s LiveBinder) to find the sample size needed.Describe hypothesis testing to test a population proportionSuppose that you do not believe that the poll is accurate. You are to create a hypothesis test to determine the validity of the poll testing its proportion.Describe what you feel the proportion should be (greater than, less than, or not equal to) in comparison to the proportion given.Write null hypothesis for the test.Write the alternate hypothesis for the test.Determine an appropriate level of significance for the test.Testing a Hypothesis about a Population proportion.Suppose that you conduct a study on your situation in which the sample statistic produces a test statistic of 2.13.Based upon your level of significance from 3 part 4, would you reject or fail to reject the null hypothesis? Explain your decision.Determine a level of significance that would have the opposite result of 4 a part i. Explain why this level of significance would have the opposite result.Submitting Course Assessment Part 2:When you are ready to submit your Course Assessment Part 2, click on the Course Assessment Dropbox and complete the steps below:Click the link that says Add Attachments.Click on the Upload button.Click the Add Attachments button.Locate your Course Assessment and click on Open.To view your graded work, come back to the Dropbox or go to the Gradebook after your instructor has evaluated it. Click the Dropbox to access it.Make sure that you save a copy of your submitted Assignment
The graph of a quadratic inequality is shown below. Use the graph to find the solutions to the inequality in terms of x.
The graph of a quadratic inequality is shown below. Use the graph to find the solutions to the inequality in terms of x.A. ...
The graph of a quadratic inequality is shown below. Use the graph to find the solutions to the inequality in terms of x.
The graph of a quadratic inequality is shown below. Use the graph to find the solutions to the inequality in terms of x.A. x ≤ -2 or x ≥ 1B. x < 2 or x > 1C. -2 ≤ x ≤ 1D. -2 < x < 1
Topic 4 exercises
Chapter 10, numbers 10.9, 10.10, 10.11, and 10.12Chapter 11, numbers 11.11, 11.19, and 11.20Chapter 12, numbers 12.7, 12.8 ...
Topic 4 exercises
Chapter 10, numbers 10.9, 10.10, 10.11, and 10.12Chapter 11, numbers 11.11, 11.19, and 11.20Chapter 12, numbers 12.7, 12.8, and 12.1010.9 The normal range for a widely accepted measure of body size, the body mass index (BMI), ranges from 18.5 to 25. Using the midrange BMI score of 21.75 as the null hypothesized value for the population mean, test this hypothesis at the .01 level of significance given a random sample of 30 weight-watcher participants who show a mean BMI = 22.2 and a standard deviation of 3.1. 10.10 Let’s assume that, over the years, a paper and pencil test of anxiety yields a mean score of 35 for all incoming college freshmen. We wish to determine whether the scores of a random sample of 20 new freshmen, with a mean of 30 and a standard deviation of 10, can be viewed as coming from this population. Test at the .05 level of significance. 10.11 According to the California Educational Code (http://www.cde.ca.gov/ls/fa/sf/pegui-demidhi.asp), students in grades 7 through 12 should receive 400 minutes of physical education every 10 school days. A random sample of 48 students has a mean of 385 minutes and a standard deviation of 53 minutes. Test the hypothesis at the .05 level of significance that the sampled population satisfies the requirement. 10.12 According to a 2009 survey based on the United States census (http://www.census.gov/prod/2011pubs/acs-15.pdf), the daily one-way commute time of U.S. workers averages 25 minutes with, we’ll assume, a standard deviation of 13 minutes. An investigator wishes to determine whether the national average describes the mean commute time for all workers in the Chicago area. Commute times are obtained for a random sample of 169 workers from this area, and the mean time is found to be 22.5 minutes. Test the null hypothesis at the .05 level of significance. 11.11 Give two reasons why the research hypothesis is not tested directly. 11.19 How should a projected hypothesis test be modified if you’re particularly concerned about (a) the type I error? (b) the type II error? 11.20 Consult the power curves in Figure 11.7 to estimate the approximate detection rate, rounded to the nearest tenth, for each of the following situations: (a) a four-point effect, with a sample size of 13 (b) a ten-point effect, with a sample size of 29 (c) a seven-point effect with a sample size of 18 (Interpolate) (I ATTACHED FIGURE 11.7) *12.7 In Question 10.5 on page 191, it was concluded that, the mean salary among the population of female members of the American Psychological Association is less than that ($82,500) for all comparable members who have a doctorate and teach full time. (a) Given a population standard deviation of $6,000 and a sample mean salary of $80,100 for a random sample of 100 female members, construct a 99 percent confidence interval for the mean salary for all female members (b) Given this confidence interval, is there any consistent evidence that the mean salary for all female members falls below $82,500, the mean salary for all members? 12.8 In Review Question 11.12 on page 218, instead of testing a hypothesis, you might prefer to construct a confidence interval for the mean weight of all 2-pound boxes ofcandy during a recent production shift. (a) Given a population standard deviation of .30 ounce and a sample mean weight of 33.09 ounces for a random sample of 36 candy boxes, construct a 95 percent con-fidence interval (b) Interpret this interval, given the manufacturer’s desire to produce boxes of candy that, on the average, exceed 32 ounces. 12.10 Imagine that one of the following 95 percent confidence intervals estimates the effect of vitamin C on IQ scores: 95% CONFIDENCE INTERVAL LOWER LIMIT UPPER LIMIT 1100102 29599 3102106 490 111 59198 (a) Which one most strongly supports the conclusion that vitamin C increases IQ scores? (b) Which one implies the largest sample size? (c) Which one most strongly supports the conclusion that vitamin C decreases IQ scores? (d) Which one would most likely stimulate the investigator to conduct an additional experiment using larger sample sizes?
Acaydia School Elevations Details and Sections for a Commercial Building Project
Refer to Sheets A4.1, A4.2, A5.1, A6.1, A9.1, and A9.2 from the Delhi Flower and Garden Centers commercial building
plans ...
Acaydia School Elevations Details and Sections for a Commercial Building Project
Refer to Sheets A4.1, A4.2, A5.1, A6.1, A9.1, and A9.2 from the Delhi Flower and Garden Centers commercial building
plans in the Large Prints supplement to answer the following questions.Complete the activity 9- 3 form fill in the answer and save as a pdf. There are 9 questions
Similar Content
Applied Calc Derivatives RQ18(1)
(1 pt) Differentiate:
(a) y = 8.64 + 3e
dy
dx
(b) y = 6 In(x) + 6e* – 7x5 + 12
dy
dx
...
Multiple regression case study
Review "Multiple Regression Models Case Study: Web Video on Demand" for this topic's case study, predicting advertising sa...
Algebra Project
Algebra for Non-STEM There are 2 major problems need to solve.1.The Olympic 200m dash gold medal times for men and women ...
Unit 5 individual project for math133
Assignment DescriptionDownload your Individual Project. Fill out the answer form, and submit it to your instructor. The ma...
Advanced Business Statistics Homework
The objective of this case study is to be able to compare and contrast the classical and empirical probability approaches ...
I want help with an assignment on statistics.Before you decide to accept it, I hope you can make sure that you are proficient in the following statistics:
I want help with an assignment on statistics.Before you decide to accept it, I hope you can make sure that you are profici...
Cigarette Smoking And Performance 2
Cigarette Smoking students have Lower College Grades than Non-smoking students Cigarette Smoking students have Lower Colle...
Name
The difficulty in finding the correct factors occurs especially when the number is an even number. In this case there pres...
Calculus3
...
Related Tags
Book Guides
Fast Food Nation
by Eric Schlosser
To Kill a Mockingbird
by Harper Lee
Macbeth
by William Shakespeare
And Then There Were None
by Agatha Christie
You Are a Badass
by Jen Sincero
The Call of the Wild
by Jack London
Extreme Ownership - How US Navy SEALs Lead and Win
by Jocko Willink and Leif Babin
Into the Wild
by Jon Krakauer
The Eyes Were Watching God
by Zora Neale Hurston
Get 24/7
Homework help
Our tutors provide high quality explanations & answers.
Post question
Most Popular Content
MM305M3 Purdue Global University Inferential Statistics Paper
Part 2:Show your work and explain your process for determining the solution for each of these problems on a word document ...
MM305M3 Purdue Global University Inferential Statistics Paper
Part 2:Show your work and explain your process for determining the solution for each of these problems on a word document with the solution given below the problem. If Excel was used, please indicate that as well on the word document. A word document and/or the Excel Workbook (if used) should be submitted to the Dropbox with labels on the worksheets to indicate which problem is being evaluated.All answers should be clearly indicated. Written explanation, reasoning, and rationale should use complete sentences. Pollingreport.com lists several public opinion polls. Search the site and find a poll where the sample size and margin of error are given. Try to find a poll dealing with a topic in your profession or one in which you are really interested.Determine the following information for the selected poll results and include in your paper.State the URL for the website. State the poll question, the sample size n, and the margin of error (also known as sampling error). See Example and CA Video Starter in this module’s LiveBinder.Calculate confidence interval estimates for the proportionState the confidence interval using the MoE. What does this confidence interval estimate?Use the Confidence Interval template (found in this module’s LiveBinder) to calculate the confidence interval based on the sample size and the number of successes (the proportion you are interested in). Use a confidence level of 95%.What is the calculated confidence interval? How does this compare to the interval in part a using the poll’s margin of error?Compute sample size needed for the confidence interval of the proportion.Calculate the sample size needed for the given margin of error and see if the poll had enough people surveyed. Use the sample size template (found in this module’s LiveBinder) to find the sample size needed.Describe hypothesis testing to test a population proportionSuppose that you do not believe that the poll is accurate. You are to create a hypothesis test to determine the validity of the poll testing its proportion.Describe what you feel the proportion should be (greater than, less than, or not equal to) in comparison to the proportion given.Write null hypothesis for the test.Write the alternate hypothesis for the test.Determine an appropriate level of significance for the test.Testing a Hypothesis about a Population proportion.Suppose that you conduct a study on your situation in which the sample statistic produces a test statistic of 2.13.Based upon your level of significance from 3 part 4, would you reject or fail to reject the null hypothesis? Explain your decision.Determine a level of significance that would have the opposite result of 4 a part i. Explain why this level of significance would have the opposite result.Submitting Course Assessment Part 2:When you are ready to submit your Course Assessment Part 2, click on the Course Assessment Dropbox and complete the steps below:Click the link that says Add Attachments.Click on the Upload button.Click the Add Attachments button.Locate your Course Assessment and click on Open.To view your graded work, come back to the Dropbox or go to the Gradebook after your instructor has evaluated it. Click the Dropbox to access it.Make sure that you save a copy of your submitted Assignment
The graph of a quadratic inequality is shown below. Use the graph to find the solutions to the inequality in terms of x.
The graph of a quadratic inequality is shown below. Use the graph to find the solutions to the inequality in terms of x.A. ...
The graph of a quadratic inequality is shown below. Use the graph to find the solutions to the inequality in terms of x.
The graph of a quadratic inequality is shown below. Use the graph to find the solutions to the inequality in terms of x.A. x ≤ -2 or x ≥ 1B. x < 2 or x > 1C. -2 ≤ x ≤ 1D. -2 < x < 1
Topic 4 exercises
Chapter 10, numbers 10.9, 10.10, 10.11, and 10.12Chapter 11, numbers 11.11, 11.19, and 11.20Chapter 12, numbers 12.7, 12.8 ...
Topic 4 exercises
Chapter 10, numbers 10.9, 10.10, 10.11, and 10.12Chapter 11, numbers 11.11, 11.19, and 11.20Chapter 12, numbers 12.7, 12.8, and 12.1010.9 The normal range for a widely accepted measure of body size, the body mass index (BMI), ranges from 18.5 to 25. Using the midrange BMI score of 21.75 as the null hypothesized value for the population mean, test this hypothesis at the .01 level of significance given a random sample of 30 weight-watcher participants who show a mean BMI = 22.2 and a standard deviation of 3.1. 10.10 Let’s assume that, over the years, a paper and pencil test of anxiety yields a mean score of 35 for all incoming college freshmen. We wish to determine whether the scores of a random sample of 20 new freshmen, with a mean of 30 and a standard deviation of 10, can be viewed as coming from this population. Test at the .05 level of significance. 10.11 According to the California Educational Code (http://www.cde.ca.gov/ls/fa/sf/pegui-demidhi.asp), students in grades 7 through 12 should receive 400 minutes of physical education every 10 school days. A random sample of 48 students has a mean of 385 minutes and a standard deviation of 53 minutes. Test the hypothesis at the .05 level of significance that the sampled population satisfies the requirement. 10.12 According to a 2009 survey based on the United States census (http://www.census.gov/prod/2011pubs/acs-15.pdf), the daily one-way commute time of U.S. workers averages 25 minutes with, we’ll assume, a standard deviation of 13 minutes. An investigator wishes to determine whether the national average describes the mean commute time for all workers in the Chicago area. Commute times are obtained for a random sample of 169 workers from this area, and the mean time is found to be 22.5 minutes. Test the null hypothesis at the .05 level of significance. 11.11 Give two reasons why the research hypothesis is not tested directly. 11.19 How should a projected hypothesis test be modified if you’re particularly concerned about (a) the type I error? (b) the type II error? 11.20 Consult the power curves in Figure 11.7 to estimate the approximate detection rate, rounded to the nearest tenth, for each of the following situations: (a) a four-point effect, with a sample size of 13 (b) a ten-point effect, with a sample size of 29 (c) a seven-point effect with a sample size of 18 (Interpolate) (I ATTACHED FIGURE 11.7) *12.7 In Question 10.5 on page 191, it was concluded that, the mean salary among the population of female members of the American Psychological Association is less than that ($82,500) for all comparable members who have a doctorate and teach full time. (a) Given a population standard deviation of $6,000 and a sample mean salary of $80,100 for a random sample of 100 female members, construct a 99 percent confidence interval for the mean salary for all female members (b) Given this confidence interval, is there any consistent evidence that the mean salary for all female members falls below $82,500, the mean salary for all members? 12.8 In Review Question 11.12 on page 218, instead of testing a hypothesis, you might prefer to construct a confidence interval for the mean weight of all 2-pound boxes ofcandy during a recent production shift. (a) Given a population standard deviation of .30 ounce and a sample mean weight of 33.09 ounces for a random sample of 36 candy boxes, construct a 95 percent con-fidence interval (b) Interpret this interval, given the manufacturer’s desire to produce boxes of candy that, on the average, exceed 32 ounces. 12.10 Imagine that one of the following 95 percent confidence intervals estimates the effect of vitamin C on IQ scores: 95% CONFIDENCE INTERVAL LOWER LIMIT UPPER LIMIT 1100102 29599 3102106 490 111 59198 (a) Which one most strongly supports the conclusion that vitamin C increases IQ scores? (b) Which one implies the largest sample size? (c) Which one most strongly supports the conclusion that vitamin C decreases IQ scores? (d) Which one would most likely stimulate the investigator to conduct an additional experiment using larger sample sizes?
Acaydia School Elevations Details and Sections for a Commercial Building Project
Refer to Sheets A4.1, A4.2, A5.1, A6.1, A9.1, and A9.2 from the Delhi Flower and Garden Centers commercial building
plans ...
Acaydia School Elevations Details and Sections for a Commercial Building Project
Refer to Sheets A4.1, A4.2, A5.1, A6.1, A9.1, and A9.2 from the Delhi Flower and Garden Centers commercial building
plans in the Large Prints supplement to answer the following questions.Complete the activity 9- 3 form fill in the answer and save as a pdf. There are 9 questions
Earn money selling
your Study Documents