Assumptions underlying repeated-measures t-tests

Assignment Help Basic Statistics
Reference no: EM131361611

In this SPSS assignment, use the tools learned in Gravetter and Wallnau (2013) Chapter 11 to describe a dependent-samples repeated measures t-test using the teachersurvey.sav SPSS data file. Imagine a researcher is interested in whether teachers' self-esteem differs at the beginning and at the end of the school year. Use the data file: teacher survey.save to conduct a dependent-samples repeated-measures t-test (referred to as a paired-samples t-test in SPSS). In this data- set self-esteem was measured at the beginning of the school year (Score One) and at the end of the school year (Score Two) (i.e. repeated- measures with the same group). These are the variables to be used in this analysis. 

  • Are the two main assumptions underlying repeated-measures t-tests met?  Support your response with SPSS output as needed.
  • What are the null and alternative hypotheses?
  • What are the mean and standard deviation for beginning self-esteem (Score One) and end self-esteem (Score Two) using APA style?
  • What is the value of Cohen's d?  Is it small, medium, or large?
  • Interpret the mean, standard deviation, standard error, and confidence interval in the paired-samples t-test output box.
  • What is the percentage of variance explained?  Interpret this value.
  • Report the results in APA format. 
  • What might be concluded from these results? In these conclusions, discuss possible limitations of the study and recommendations for future research.

Reference no: EM131361611

Questions Cloud

Two-sided confidence interval estimate : 1) A company manufactures batteries for watches. A random sample of 144 batteries is taken and the sample mean life is 5.5 years with a standard deviation of 0.6 years. If you were constructing a 99% two-sided confidence interval estimate, the low..
What are the financial markets : What are the financial markets and what purposes do they serve and what are financial intermediaries? How do these intermediaries function in the economy?
Deterministic dynamic programming : Question: Please refer to the attachment to answer this question. This question was created from 18 Deterministic Dynamic Programming https://www.coursehero.com/file/9386232/18-Deterministic-Dynamic-Programming/?dqqid=23435
Write an efficient backtracking program : A derangement is a permutation p of {1,...,n} such that no item is in its proper position, i.e. pi ≠ i for all 1 ≤ i ≤ n. Write an efficient backtracking program with pruning that constructs all the derangements of n items.
Assumptions underlying repeated-measures t-tests : Are the two main assumptions underlying repeated-measures t-tests met?  Support your response with SPSS output as needed. What are the null and alternative hypotheses?
Define the term audience profile : Define the term audience profile. What are the basic categories used in a profile and how does this information help a writer compose and deliver a speech presentation?
Finding anagrams using combinatorial search : Design and implement an algorithm for finding anagrams using combinatorial search and a dictionary.
Experiment and an observation : What is the difference between an experiment and an observation?
Choose something that you measure on a daily basis : Choose something that you measure on a daily basis. What do you measure and how do you measure it ? How is this measurement important or necessary within your daily life?What would the consequences be if your measurements were inconsistent or inc..

Reviews

Write a Review

Basic Statistics Questions & Answers

  Conditional probability that student has work experience

Suppose that you are told that this student has at least three years of work experience. What is the conditional probability that this student has at least for years of work experience.

  What is the proportion for smoker for men

In a survey to identify of risk factors for heart disease among men and women were asked about if they ever smoke. Of the 430 men, 116 said they smoke. Of the 380 women, 73 said they smoke. What is the proportion for smoker for men

  Laboratory animals were reared under three different

laboratory animals were reared under three different conditions. the animals were randomly assigned to each group. the

  Confidence interval and the number

Determine the point estimate of the population proportion, the margin of error for the following confidence interval and the number of individual in the same with the specified characteristics, x for the sample size provided.

  How many of corks would expect to be undersized

If he were to randomly select 120 corks from the next box, then how many of these corks would John expect to be undersized?

  Compute the probability both are carriers

Arbitarily sampling one man and one woman from this population, determine probability neither is a Tay-Sachs carrier? Compute the probability both are carriers?

  Smooth the data set cars from problem

Smooth the data set cars from Problem 1 using Cleveland's smoother. Choose a reasonable value for the span using trial and error. Why does this span appear to be a good choice?

  Determine the rejection region for a hypothesis test

(i) state the appropriate null and alternative hypotheses; (ii) determine the appropriate test statistic; (iii) determine the rejection region for a hypothesis test at the α = 0.05 signi?cance level; (iv) determine the associated p-value. (v) Wh..

  Probability that a randomly selected monthly cell phone

What is the probability that a randomly selected monthly cell phone bill is more than $100?

  Significant difference between the two massage techniques

A sample of 10 persons is used to measure the effectiveness of two massage techniques. The effectiveness of the techniques is measured by the number of days that pass by before the subjects feel the need for another massage session.

  American association of university professors

For question 3, use the FacultySalaries dataset, obtained from the Bulletin of the American Association of University Professors. The dataset contains the average male and female salaries (in thousands of dollars) of assistant professors from 22 di..

  Use critical value to determine null hypothesis

Choo Choo Paper Company makes various paper products. One of their products is a 30 mils thick paper. In order to ensure that the thickness of the paper meets the 30 mils specification

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd