CramX
RegisterLog in

Single Sample Z-Test For Hypothesis Testing: Aggression Data Analysis

Get the Homework Solution to understand the single-sample z-test and its application in aggression data analysis.

David Brown
Contributor
4.7
44
7 months ago
Preview (2 of 2 Pages)
100%
Purchase to unlock

Page 1

Single Sample Z-Test For Hypothesis Testing: Aggression Data Analysis - Page 1 preview image

Loading page ...

Single Sample Z-Test for Hypothesis Testing: Aggression Data AnalysisExercise 8: Single sample z-testAs preparation for this exercise, you are strongly advised do the Time to Practice exercise 1, 2, 3 and 4 inchapter 10, and check your workagainst the correct answers in the text.Test the hypothesis that the subjects in the data set sample are more or less aggressive before theintervention than a comparison population which has an aggression mean of 5 and a standard deviationof 1.Indicate the following steps:1.State the null and research hypotheses:Null hypothesis: ฮผ = 5Research (Alternative) Hypothesis:ฮผ โ‰  5 (claim)2.Set the level of significance, or Type 1 error, and explain what it means.Traditionally we take 0.05 as level of significance. The level of significance is the probability of incorrectlyrejecting the null hypothesis in favor of the alternative hypothesis (the claim in this case)3.Select the appropriate test statistic, and explain why it is appropriate. Describe the formula (10.1)for the statistic and what it means.The test statistic is a one sample z-test for a mean :this test is appropriate becausewearetesting if onemean (the sample mean) is different from the hypothesized value (given). The formula used is :๐‘ง=๐‘ฅโˆ’๐œ‡๐œŽโˆš๐‘›4.Compute the test statistic to get the โ€˜obtained valueโ€™.By using the Excel data on pre-aggression data we found : x = 5.75, n = 12 and๐œŽ=2.60Therefore :๐‘ง=5.75โˆ’52.60โˆš12=1.00

Page 2

Study Now!

XY-Copilot AI
Unlimited Access
Secure Payment
Instant Access
24/7 Support
Document Chat

Document Details

Subject
Statistics

Related Documents

View all
Solved Assignments

The Statistics of Inheritance

Explore how inheritance follows predictable patterns using Punnett squares and probability. This helps explain how traits pass from parents to offspring, aiding our understanding of genetics, variation, and evolution in species.

Class Notes

Estimation and Hypothesis Testing

Learn about Two-Way ANOVA, a statistical method to analyze the effects of two independent variables on one dependent variable. Understand main and interaction effects, assumptions, and how it differs from one-way ANOVA in factorial designs.

Solved Assignments

Two-Sample Hypothesis Tests

This document provides solutions for two-sample hypothesis testing problems.

Solved Assignments

Simple Regression Analysis

Study on regression techniques and their applications in data analysis.

Solved Assignments

SPSS Cumulative Assessment Instructions

Instructions for conducting cumulative assessments using SPSS software.

Solved Assignments

Inferential Statistics Week 2 Solution

Solutions to inferential statistics problems from Week 2 coursework.

Solved Assignments

Hypothesis Testing ๏ฟฝ Comparing Two Groups

Examines hypothesis testing methods for comparing two groups.

Solved Assignments

Probability and Statistics Assignment

An assignment covering probability theory and statistical analysis concepts.

Solved Assignments

Applying Hypothesis Tests Discussion #8

Discussion-based solved assignment on applying various hypothesis testing methods in research.

Solved Assignments

Research Process and Terminology

Covers key concepts and methodologies in research processes.