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Progress Check

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

Use StatCrunch to find a one-sample T-interval to estimate a population mean.
Interpret a confidence interval in context.
Use a confidence interval to find the margin of error (MOE).
Identify which of the two confidence intervals is more accurate.
Identify which of the two confidence intervals is more precise.

Directions

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

Three steps to complete the assignment

Step 1: Review the Rubric

Before you submit your work, review the rubric at the bottom of this assignment.
Use the rubric as a checklist to determine whether you are ready to submit your work.

Step 2: First Draft

Commit a good-faith effort to address each item in the Prompt section below.
Please be sure to number your responses and include “white space” between problem numbers. This improves the readability and flow of your work. I cannot give feedback and grade jumbled work.
Use either of the following options to submit your work.
OPTION 1: You can submit a text-entry assignment (i.e. typing your answers in Canvas). To learn how to submit a text-entry assignment, use these (opens in a new tab).
OPTION 2: You can upload your paper-and-pencil work (or the digital equivalent). To learn how to upload your paper-and-pencil work, use these (opens in a new tab). WARNING – some file types may not be visible on my end. So to learn which files you can upload, be sure to use the directions link I provided for this option.
Not ready to submit a good-faith effort yet? Avoid frustration – use the link to the Questions, Answers, & Tips discussion board (at the bottom of this page) to post questions about this assignment (or visit the discussion board to answer your classmates’ questions). You can also contact me directly (see the homepage for my contact information).

Step 3: Optional Final Draft

After you submit your good-faith attempt to fully respond to the questions in the Prompt section below, advance to the ANSWER(S) page.
You can use the ANSWER(S) page to correct your work and resubmit this assignment any time before I begin grading the problems. However, to earn full credit, you are not required to submit a final draft for this assignment. But if you do submit a final draft, I will only grade it if you submitted a good-faith effort on your first draft.
Warning – I will only grade your most recent submission. So if you choose to submit a final draft, please do not leave anything out, and please do not direct me to read an earlier submission. To maximize your score, your most recent submission (at the time I begin grading) must be complete.

Data

All directions in this assignment open in a new tab.

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

Variables

Gender-Career IAT Variables

Gender-Career IAT (opens in a new tab).

Gender-Science IAT Variables

Gender-Science IAT (opens in a new tab).

Race IAT Variables

Race IAT (opens in a new tab).

Sexuality IAT Variables

Sexuality IAT (opens in a new tab).

Weapons IAT Variables

Weapons IAT (opens in a new tab).

Weight IAT Variables

Weight IAT (opens in a new tab).

Prompt

You are tasked with using StatCrunch and your unique IAT sample to estimate the population mean for your IAT-Score variable.

Question 1

Use StatCrunch and your unique IAT sample to estimate the mean IAT-Score for the population of IAT participants at the 80% confidence level (). Copy the contents of your StatCrunch output window and paste it into your response.
Identify the 80% confidence interval.
Interpret your confidence interval in context.
Can we use the StatCrunch output to find the margin of error (MOE)? If so, what is the MOE? If not, identify the missing information.

Question 2

Use StatCrunch and your unique IAT sample to estimate the mean IAT-Score for the population of IAT participants at the 95% confidence level (). Copy the contents of your StatCrunch output window and paste it into your response.
Identify the 95% confidence interval.
Interpret your confidence interval in context.
Can we use the StatCrunch output to find the margin of error (MOE)? If so, what is the MOE? If not, identify the missing information.

Question 3

Which of the two confidence intervals is more accurate? Briefly explain.
Which of the two confidence intervals is more precise? Briefly explain.

StatCrunch Directions

Here is a PDF document with all (opens in a new tab).

Module 21 Discussion Board

Use the Module 21 (opens in a new tab) to ask questions or provide feedback about the problems in any Module 21 activity – including this peer-reviewed assignment.

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

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