Progress Check
Use this activity to assess whether you and your peers can:
Expl
Progress Check
Use this activity to assess whether you and your peers can:
Explain the meaning of each relevant item from the StatCrunch output when testing a claim about a mean.
Directions
Use the drop-down menu to learn about the three steps needed to complete this assignment.
Three steps to complete the assignmentPrompt
In a previous lab we tested the following hypotheses, �0: �=4.73 and ��: �<4.73 (where � is the mean number of alcoholic drinks consumed by students at a liberal arts college).
In a random sample of 75 students, the mean was 3.93 alcoholic drinks consumed in a week. Here is the StatCrunch output from the hypothesis test.
�: Mean of variable
�0: �=4.73
��: �≠4.73Hypothesis test resultsVariableSample MeanStd. Err.DFT-StatP-value
number of drinks per week3.9333333 0.43592434 74 -1.8275343 0.0717
Using this context and the StatCrunch output, explain the meaning of each of the following.
Std. Err (standard error)
T-stat (T-score)
P-value
In a previous matched pairs lab we tested the following hypotheses, where � is the mean of the differences in corn yield for a plot of land (regular seed minus kiln-dried ): H0 : µ = 0 and Ha : µ < 0. In a random sample of 11 seeds of each type, the mean of the differences in the sample was -33.7. Here is a StatCrunch print-out of the hypothesis test.
Paired T hypothesis test:
��=�1−�2 : Mean of the difference between Regular seed and Kiln-dried seed
�0 : ��=0
�� : ��<0
Hypothesis test resultsDifferenceMeanStd. Err.DFT-StatP-value
Regular seed - Kiln-dried seed-33.72727319.95134610-1.69047610.0609
Differences stored in column, Differences.
Using this context and the StatCrunch output, explain the meaning of each of the following.
Std. Err (standard error)
T-stat (T-score)
P-value.
Module 22 Discussion Board
Use the Module 22 discussion board (opens in a new tab) to ask questions or provide feedback about the problems in any Module 22 activity - including this peer-reviewed assignment.
Review Feedback
Instructor feedback is only available after an assignment is graded.
Use these directions (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 Creative Commons 4.0 International LicenseLinks to an external site..
Rubric
Formative Assessments
Assessments
CriteriaRatingsPts
This criterion is linked to a Learning OutcomeAnswering the Prompt
10 ptsFull Credit
The 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 Correct
The 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 incorrect
The 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 Marks
The first submission does not demonstrate a good-faith effort to address the Prompt.
10 pts
Total Points: 10
