5. Determine the value needed to reject the null hypothesis. Remember to calculate the correct degrees of freedom before finding the critical t-value! Note whether it is best to use the one-tailed or...

Extracted text: 5. Determine the value needed to reject the null hypothesis. Remember to calculate the correct degrees of freedom before finding the critical t-value! Note whether it is best to use the one-tailed or two-tailed test. 6. Compare the obtained and critical value 7. Decide whether you will retain the null hypothesis or ... Decide whether you will reject the null hypothesis 8. Finally, write up your results as you would see it in a results section of an empirical 9. group research Make sure to include the means and SDs for smashed into and hit рaper. (in miles). I do NOT need to see the effect size (Cohen's D) 10. Was your obtained t-value positive or negative? Would it matter either way? With your discussion tell my why a positive or negative value is not important when it comes group, obtained value to your 11. What is more appropriate to use for your data set: the one-tailed t-Test or the two-tailed t- Test. Why? 12. Why would it be easier to find significance using a p value of .05 than a p value of .01? MODE DEL


Extracted text: SY 3211 - Research Methods and Design I - Group Assignment #11 - How Fast? Instructions: In 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to ask a question can influence eyewitness memory. In the study, college students watched a film of an automobile accident and then were asked questions about what they saw. One group was asked, "About how fast were the cars going when they smashed into each other?" Another group was asked the same question except the verb was changed to "hit" instead of smashed into." The "smashed into" group reported significantly higher estimates of speed than the "hit group. You, as a researcher wonder if Loftus and Palmer's study is reliable, and this study with a sample of FIU students and obtains the following data. repeats Hit Group Smashed Into Group 28 46 22 41 36 51 32 36 38 41 39 37 33 46 31 37 35 32 52 25 55 22 50 27 41 22 39 25 47 32 45 26 32 36 41 35 46 39 37 40 Your job is to determine if smashed into group reports higher speed than hit group. As you work on this problem, make sure to provide information for each of the eight steps we cover in Chapter 11 (Salkind) as well as the APA write-up you would see in a results section. 1l and alternative hypotheses