Category: Statistics

Estadistica detallada con explicacion sobre que es con metodos para ejercicios

finish all questions

Hi. I have an excel file with 130 responses..I need to put it in an spss version,,that is code the variables and have it clean. Just this.

In this project, we’ll use our unique IAT random samples to demonstrate what we learned in Unit 4 (Module 11).

WARNING: Since this project is equivalent to an exam, I will not be able to help you. However, you can still rely on your classmates for help, and I can answer clarification questions.

Progress Check

Use this activity to assess whether you can:

• Describe the sampling distribution for sample proportions and use it to identify unusual (and more common) sample results.
• Distinguish between a sample statistic and a population parameter.
• Use StatCruch to find a confidence interval to estimate a population proportion when conditions are met.
• Interpret the confidence interval in context.
• Interpret the meaning of a confidence level and relate it to the margin of error when testing a claim.
• Given a claim about a population, determine the null and alternative hypotheses.
• Conduct a hypothesis test for a population proportion and state a conclusion in context.
• Interpret the P-value as a conditional probability.
• Recognize type I and type II errors and articulate the consequence of either error.

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Directions

WARNING: The directions for Unit Projects differ from the directions for homework and lab assignments.

Use the drop-down menu to learn about the four steps needed to complete this assignment.

Four steps to complete the assignment

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Data

For the remainder of this assignment, all links open in a new tab.

• Login and open StatCrunch ().
• Open your IAT sample data set in StatCrunch ().

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Prompts

Each IAT data set has a different prompt for this project. Select the appropriate drop-down triangle below to see the prompt for your data set.

Race IAT Questions & Variables

Open for the Race prompt

Weapons IAT Questions & Variables

Open for the Weapons prompt

Weight IAT Questions & Variables

Open for the Weight prompt

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StatCrunch Directions

Here is a PDF document with all .

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Units 6 & 7 Project Discussion Board

Use the Units 6 & 7 Project to ask questions or provide feedback about this project.

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Review Feedback

• Instructor feedback is only available after an assignment is graded.
• Use these (opens in a new tab) to learn how to review feedback.

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Click the “Next” or > button to continue.

Content by Cuyamaca College math faculty and licensed under the .

Rubric

Units 6/7 Project

Units 6/7 Project

Criteria	Ratings	Pts
This criterion is linked to a Learning OutcomeQuestion 1aIAT data set is identified.	2.5 ptsComplete0 ptsIncomplete	2.5 pts
This criterion is linked to a Learning OutcomeQuestion 1bStatCrunch output is provided and is correct.	5 ptsComplete0 ptsIncomplete	5 pts
This criterion is linked to a Learning OutcomeQuestion 1cCorrect work is shown for checking conditions	2.5 ptsComplete0 ptsIncomplete	2.5 pts
This criterion is linked to a Learning OutcomeQuestion 1dConfidence interval was correctly stated in context.	5 ptsComplete0 ptsIncomplete	5 pts
This criterion is linked to a Learning OutcomeQuestion 1eQuestion was correctly answered with explanation	2.5 ptsComplete0 ptsIncomplete	2.5 pts
This criterion is linked to a Learning OutcomeQuestion 2aHypotheses were correctly stated in words and symbols	5 ptsComplete3 ptsPartial CreditEither the words or symbols are missing/incorrect. 0 ptsIncomplete	5 pts
This criterion is linked to a Learning OutcomeQuestion 2bCorrect work is shown for checking conditions	2.5 ptsComplete0 ptsIncomplete	2.5 pts
This criterion is linked to a Learning OutcomeQuestion 2cStatCrunch output is provided and is correct.	5 ptsComplete0 ptsIncomplete	5 pts
This criterion is linked to a Learning OutcomeQuestion 2dP-value was provided and interpreted correctly.	5 ptsComplete0 ptsIncomplete	5 pts
This criterion is linked to a Learning OutcomeQuestion 2eA correct conclusion was provided that included the p-value and referenced the population and the appropriate variable.	5 ptsComplete3 ptsPartial Credit 0 ptsIncomplete	5 pts
This criterion is linked to a Learning OutcomeQuestion 3aCorrectly identified the type of error with a brief explanation	2.5 ptsComplete1.5 ptsPartial Credit 0 ptsIncomplete	2.5 pts
This criterion is linked to a Learning OutcomeQuestion 3bError type was interpreted in the context of the problem.	2.5 ptsComplete1.5 ptsPartial Credit 0 ptsIncomplete	2.5 pts
This criterion is linked to a Learning OutcomeSelf-evaluationThe final draft begins (or ends) with a self-evaluation of your first draft. The self-evaluation describes how you demonstrated attainment of the learning objectives in the “Progress Check” section of the assignment, OR what you needed to correct in order to demonstrate attainment of the learning objectives.	5 ptsComplete3 ptsPartial CreditThe self-evaluation does not describe how you demonstrated attainment of the learning objectives in the “Progress Check” section of the assignment, or what you needed to correct in order to demonstrate attainment of the learning objectives. 0 ptsIncomplete	5 pts

Total Points: 50

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 page.

Context

In 2015 college students at a large state university completed a survey about their academic and personal life. Questions ranged from “How many credits are you registered for this semester?” to “Would you define yourself as a vegetarian?”

The researcher randomly selected 325 students from the university; 312 responded to the survey.

Variables

• Math: Math SAT score
• Verbal: Verbal SAT score
• Credits: Number of credits the student is registered for
• Year: Year in college (1=Freshman, 2=Sophomore, 3=Junior, 4=Senior)
• Exercise: Time (in minutes) spent exercising in a typical day
• Sleep: Time (in hours) spent sleeping in a typical day
• Veg: Are you a vegetarian (yes, no, some)
• Cell: Do you own a smart phone (yes, no)

Data

Open the cell-phones datafile in the Stats at Cuyamaca College group on StatCrunch ( – opens in a new tab).

Prompt

Here is the research question for this lab.

Based on a recent study, roughly 80% of college students in the U.S. own a smartphone. Is the proportion of smartphone owners lower at this university?

Work through the questions below to identify the information you will need to answer this question.

List of StatCrunch Directions

Each link will open in a new window. To return to this discussion, either close the new tab or select the tab for this discussion.

• (You only need to do this once.)
• (no screenshots; please use these directions)
• (no attachments; please use these directions)

Here is a PDF document with all .

Question 12 / 2 pts

What type of study is this?

Observational study

Correct. This is an observational study. The researchers gathered data through a survey.

Experiment

IncorrectQuestion 20 / 2 pts

What is the goal of statistical inference for this study?

estimate a population mean with a confidence interval estimate a population proportion with a confidence interval testing a claim about a population mean with a hypothesis test

Incorrect. The data involves a categorical variable, not a quantitative variable. Therefore, we are not concerned with a population mean in this study.

testing a claim about a population proportion with a hypothesis test

PartialQuestion 30.75 / 2 pts

Identify each variable as either relevant or not relevant to the research question; further classify the relevant variable(s) as either quantitative or categorical.

Relevant; Categorical Verbal

Relevant; Categorical

Credits

Not relevant to the question

Year

Not relevant to the question

Exercise

Relevant; Categorical

Sleep

Relevant; Categorical

Veg

Relevant; Quantitative

Cell

Relevant; Categorical

IncorrectQuestion 40 / 2 pts

Which of the following is the appropriate graph to summarize the data relevant to this question?

Side-by-side boxplots

Incorrect. A boxplot is a visual display of a quantitative variable. We use side-by-side boxplots to compare the distribution of a quantitative variable across multiple groups from a categorical variable. In other words, side-by-side boxplots are a meaningful display when we have a categorical variable and a quantitative variable such as gender (categorical) and wrist-girth (quantitative).

Cell is a single categorical variable.

Scatterplot Two-way table Piechart Histogram

IncorrectQuestion 50 / 2 pts

Which of the following is the appropriate numerical summary of the data relevant to this question?

descriptive statistics such as the mean and standard deviation

Incorrect. We use descriptive statistics such as mean, median, standard deviation, IQR, etc. to describe the distribution of a single quantitative variable across multiple groups of a categorical variable.

Cell is a single categorical variable.

percentages (proportions) Correlation (r) if appropriate Conditional percentages

Please follow the instructions in the file to complete the work.

Progress Check

Use this activity to assess whether you and your peers can:

• Interpret the P-value in context.

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Directions

Use the drop-down menu to learn about the three steps needed to complete this assignment.

Three steps to complete the assignment

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Prompt

The Pew Research Center reported in 2018 that 68% of U.S. adults rated “reducing health care costs” as a national priority. This year a survey is conducted with a national sample of 1,505 U.S. adults selected by a combination of landline and cell phone random digit dials. This year’s survey finds that 70% of the sample says that “reducing health care costs” is a national priority.

We test the following hypotheses:

: The proportion of U.S. adults this year who rate “reducing health care costs” as a national priority is still 0.68.

: The proportion of U.S. adults this year who rate “reducing health care costs” as a national priority is greater than 0.68.

The P-value is 0.045. At a 5% significance level, we would reject the null hypothesis and conclude that the proportion of U.S. adults this year who rate “reducing health care costs” as a national priority is greater than 0.68.

Explain the P-value in the context of this issue.

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Module 18 Discussion Board

Use the Module 18 (opens in a new tab) to ask questions or provide feedback about the problems in any Module 18 activity – including this peer-reviewed assignment.

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Review Feedback

• Instructor feedback is only available after an assignment is graded.
• Use these (opens in a new tab) to learn how to review feedback.

---

Click the “Next” or > button to continue.

Content by Cuyamaca College math faculty and licensed under the .

Rubric

Formative Assessments

Formative Assessments

Criteria	Ratings	Pts
This criterion is linked to a Learning OutcomeAnswering the Prompt	10 ptsFull CreditThe first submission demonstrates a good-faith effort to address each part of the Prompt. Either in the first draft or the optional final draft, all parts of the “Prompt” are addressed and the responses demonstrate attainment of the learning objectives in the “Progress Check” section of the assignment. The answers are correct. The writing/work is clear. The explanation/work is reasonable, well-organized, and easy to follow.8.5 ptsMostly CorrectThe first submission demonstrates a good-faith effort to address most of the Prompt. In the optional final draft all parts of the “Prompt” are addressed, and the responses demonstrate attainment of the learning objectives in the “Progress Check” section of the assignment. The answers are mostly correct. The writing/work is clear. The explanation/work is reasonable, well-organized, and easy to follow. 6 ptsOne or more incorrectThe first submission demonstrates a good-faith effort to respond to a smaller portion of the Prompt. In the first draft or the optional final draft, one or more parts of the “Prompt” are not addressed or are incorrect. Or, answers do not demonstrate attainment of the learning objectives in the “Progress Check” section of the assignment. Or, answers are correct, but the writing/work is unclear, incorrect, or difficult to follow.0 ptsNo MarksThe first submission does not demonstrate a good-faith effort to address the Prompt.	10 pts

Total Points: 10

HelloI need help with my homework attached is the assignment and also the statistical table. You Would need the workbook of the excel sheets yo

Progress Check

Use this activity to assess whether you and your peers can:

• Calculate and use a confidence interval to estimate a population proportion.
• Identify the appropriate tool to calculate a confidence interval.

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Directions

Use the drop-down menu to learn about the three steps needed to complete this assignment.

Three steps to complete the assignment

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Prompt

Question 1

In June 2021, Gallup published an online article titled by Jeffrey M. Jones.

According to the article, 61% of U.S. adults who responded to the survey favor requiring College students to be vaccinated in order to attend classes (including classes in fall 2021). A representative random sample of 3,572 U.S. adults, aged 18 and older, were surveyed.

1. Are conditions met for calculating a confidence interval? Support your conclusion mathematically and show your work.
2. If conditions are met, use your graphing calculator to calculate a 95% confidence interval that estimates the proportion of U.S. adults who favor requiring College students to be vaccinated in order to attend classes. State your results in context.

Question 2

Login and open StatCrunch ().

Open your IAT sample data set in StatCrunch ()

We will use a 90% confidence interval to estimate the population proportion of participants born female in our chosen IAT data set.

1. So, you are tasked with using your IAT sample to calculate a 90% confidence interval that estimates the population proportion of participants born female in your particular IAT. But, you are missing a piece of information that would allow you to use your graphing calculator to find the confidence interval. What piece of information is missing?
2. Even though we cannot readily use our graphing calculators, StatCrunch can calculate the confidence interval for us! Use StatCrunch to find the 90% confidence interval for the population proportion of female participants in your particular IAT ( – opens in a new tab). Highlight and copy everything in your StatCrunch output window and paste it into your response.
3. Identify the sample proportion in the StatCrunch output table. Then determine whether conditions are met for using the confidence interval to estimate the population proportion of female participants in your chosen IAT. Show your work.
4. If conditions are met, estimate the population proportion of female participants in your particular IAT, and state your conclusion in context. If conditions are not met, explain what a researcher could do so that conditions are met.
5. Based on your analysis, do you think the population of participants in your chosen IAT is representative of the U.S. population? Explain.

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List of StatCrunch Directions

Click here for StatCrunch Directions

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Module 17 Discussion Board

Use the Module 17 (opens in a new tab) to ask questions or provide feedback about the problems in any Module 17 activity – including this peer-reviewed assignment.

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Review Feedback

• Instructor feedback is only available after an assignment is graded.
• Use these (opens in a new tab) to learn how to review feedback.

---

Click the “Next” or > button to continue.

Content by Cuyamaca College math faculty and licensed under the .

Rubric

Formative Assessments w/ StatCrunch

Formative Assessments w/ StatCrunch

Criteria	Ratings	Pts
This criterion is linked to a Learning OutcomeAnswering the Prompt	8 ptsFull CreditThe first submission demonstrates a good-faith effort to address each part of the Prompt. Either in the first draft or the optional final draft, all parts of the “Prompt” are addressed and the responses demonstrate attainment of the learning objectives in the “Progress Check” section of the assignment. The answers are correct. The writing/work is clear. The explanation/work is reasonable, well-organized, and easy to follow.6.5 ptsMostly CorrectThe first submission demonstrates a good-faith effort to address most of the Prompt. In the optional final draft all parts of the “Prompt” are addressed, and the responses demonstrate attainment of the learning objectives in the “Progress Check” section of the assignment. The answers are mostly correct. The writing/work is clear. The explanation/work is reasonable, well-organized, and easy to follow. 3.5 ptsOne or more incorrectThe first submission demonstrates a good-faith effort to respond to a smaller portion of the Prompt. In the first draft or the optional final draft, one or more parts of the “Prompt” are not addressed or are incorrect. Or, answers do not demonstrate attainment of the learning objectives in the “Progress Check” section of the assignment. Or, answers are correct, but the writing/work is unclear, incorrect, or difficult to follow.0 ptsNo MarksThe first submission does not demonstrate a good-faith effort to address the Prompt.	8 pts
This criterion is linked to a Learning OutcomeStatCrunch	2 ptsFull CreditStatCrunch graphs and/or tables are correct and embedded with your work.1 ptsPartial CreditStatCrunch graphs and/or tables are incorrect or missing important information. 0 ptsNo CreditNo StatCrunch information is embedded with your post. Or all StatCrunch work is incorrect.	2 pts

Total Points: 10

answer the questions I have provided everything in the dropped files.