Question: What is the solution ? You are testing the claim that smiling, rather than remaining neutral, during a court proceding will lead to a different

What is the solution ?

What is the solution ? You are testing the claim
You are testing the claim that smiling, rather than remaining neutral, during a court proceding will lead to a different punishment from the judge. A sample of 34 people who smiled during their hearing and 34 people who kept neutral facial expressions during their hearing is taken and each judgment was rated for leniency. Those who smiled (population 1) had a mean leniency rating of 4.9 with a standard deviation of 1.7, while those who did not smile (population 2) had an average leniency rating of 4.1 and standard deviation 1.5. For this example, assume that the variances of the two populations are unequal. (Use Welch's) Test the claim using a 1% level of significance. What are the correct hypotheses? Ho: Select an answer v ? v Select an answer v Ha: Select an answer v ? v Select an answer v Based on the hypotheses, find the following: (Round to at least 3 decimal places.) Test Statistic = p-value = The correct decision is to Select an answer The correct summary would be: Select an answer that there is a difference in leniency when smiling over being neutral when in trouble. LeFrance, M. and Hecht, M.A., "Why Smiles Generate Leniency", Personality and Social Psychology Bulletin. 1995; 21:207-204. abstract

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