Homework: Tests and Single Sample t -tests Assignment Instructions
Overview
This Homework: Z-Tests & Single Sample T-Tests Assignment is designed to assess your understanding of the concepts and applications covered thus far in this course. This module introduces two inferential tests – the z test and single sample t test; both of which are used to determine whether a sample differs from a population. These tests are commonly used in psychology, education, business, and other fields. This Homework: Z-Tests & Single Sample T-Tests Assignment assesses your knowledge, skills, applications, and presentation of these tests using professional conventions.
Instructions
Be sure you have reviewed this module’s Learn section before completing this Homework: Z-Tests & Single Sample T-Tests Assignment. This Homework: Z-Tests & Single Sample T-Tests Assignment is worth 60 points. Each question is worth 3 points. Six points are awarded for mechanics/structure.
· Part I contains general concepts from this module’s Learn section.
· Part II requires use of SPSS. You will have to take screen shots and/or copy and paste from your SPSS to place answers within this file. Make sure you only insert relevant and legible images.
· Part III is the cumulative section. These may include short answer and/or use of SPSS but will review material from previous module(s).
· Directions for each subsection are provided in the top of each table (in the blue shaded areas).
· Answers should be placed where indicated (wherever there is “ANSWER”).
· Submit the file as a WORD document (.doc or .docx). Make sure the filename of your submission includes your full name, course and section.
o Example: HW6_JohnDoe_510B01
Make sure to check the Homework Grading Rubric before beginning this Homework: Z-Tests & Single Sample T-Tests Assignment.
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Part I: General Concepts These |
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Answer the |
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1. |
What is the critical value for a one-tailed z test? For a two-tailed z test? Which is more likely to result in a rejection of the null |
ANSWER |
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2. |
Why does tcv. Change when |
ANSWER |
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3. |
Henry performed a |
ANSWER |
Given a population standard deviation of 12, answer the following two |
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4) Calculate the standard error of the mean ( N1 = 20 N2 = 70 |
WORK: N1 = N2 = |
ANSWER N1 = N2 = |
5) How does the |
ANSWER |
Calculate the critical degrees of freedom and identify the critical values |
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6) Single sample t-test: |
df= ANSWER |
critical t = ANSWER |
Reject or Fail to Reject ANSWER |
7) Single sample t-test: one-tailed, N |
df= ANSWER |
critical t = ANSWER |
Reject or Fail to Reject ANSWER |
8) Pearson’s r correlation: |
df= ANSWER |
critical r = ANSWER |
Reject or Fail to Reject ANSWER |
9) Pearson’s r correlation: |
df= ANSWER |
critical r = ANSWER |
Reject or Fail to Reject ANSWER |
A company decides |
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10) Calculate |
ANSWER |
11) Conduct the What is the zobt score? |
ANSWER |
12) Write your |
ANSWER |
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Part II: SPSS These |
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Exercise 1 Spatial ability was
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Run descriptive |
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ANSWER SPSS output |
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14) |
You want to compare |
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ANSWER: SPSS output |
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15) |
Write a results All homework |
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ANSWER |
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Part III: Cumulative These |
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A recruiter wants to know if college GPA is truly Remember – prediction requires a different analysis than
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16) Paste appropriate SPSS output. |
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ANSWER |
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17) Paste appropriate SPSS graph. |
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ANSWER |
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18) Write a Results section in current APA |
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ANSWER |
Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 6. Remember to name the file appropriately.
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Done! |
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