PSYC354_HW8G.docx

PSYC354_HW8G.docx - PSYC 354 HOMEWORK 8 Single-Sample...

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PSYC 354 H OMEWORK 8 Single-Sample T- Test When submitting this file, be sure the filename includes your full name, course and section. Example: HW8_JohnDoe_354B01 Be sure you have reviewed this module/week’s lesson and presentations along with the practice data analysis before proceeding to the homework exercises. Complete all analyses in SPSS, then copy and paste your output and graphs into your homework document file. Answer any written questions (such as the text-based questions or the APA Participants section) in the appropriate place within the same file. Part I: Concepts Questions 1–3; Answer the questions in the spaces provided. Part I: Questions 1a-e Fill in the highlighted blanks with the best word or words. 1-a) You use a t- test when you know the population __mean______ but not the population __Standard Deviation______ . 1-b) The 2 groups compared in the single-sample t- test are the sample and the __population______ . 1-c) The number of scores that are free to vary when you are estimating a population parameter from a sample is called the ___degrees of freedom_____ . 1-d) A researcher reports the results of a single-sample t- test as t (23) = 3.96. The degrees of freedom for this t -test are ___23___, which means there were __24__ total participants in the researcher's sample. 1-e) When your t- statistic in your results exceeds your critical cutoffs, you reject the null hypothesis. Part I: Question 2-3 2 Explain what each part of the following statistical phrase represents, as it would be Page 1 of 9
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PSYC 354 ) reported in APA format: t(19) = 3.15, p = .04 t t distribution 19 Number of observations 3.15 Calculated value of t P P Value .04 The probability that t will exceed 3.15 3)
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