Answered You can hire a professional tutor to get the answer.

# 1.Recall again that Rind Bordia (1996) investigated whether or not drawing a happy face on customers' checks increased the amount of tips received

**1. Recall again that Rind & Bordia (1996) investigated whether or not drawing a happy face on customers' checks increased the amount of tips received by a waitress at an upscale restaurant on a university campus. During the lunch-hour a waitress drew a happy, smiling face on the checks of a random half of her customers. The remaining half of the customers received a check with no drawing (18 points).**

**The tip percentages for the control group (no happy face) are as follows:**

**45% 39% 36% 34% 34% 33% 31% 31% 30% 30% 28% 28% 28% 27% 27% 25% 23% 22% 21% 21% 20% 18% 8% **

**The tip percentages for the experimental group (happy face) are as follows:**

**72% 65% 47% 44% 41% 40% 34% 33% 33% 30% 29% 28% 27% 27% 25% 24% 24% 23% 22% 21% 21% 17%**

**This time, you are to perform a "hypothesis test" using the tip data, answering each of the questions below. For short-answer questions, be brief. However, you must give enough detail to justify your answers. Single-sentence responses will generally not suffice, but do not exceed a paragraph for any given answer. **

**h. Enter the data above into SPSS. You will enter in two variables for each restaurant patron: 1) which experimental group they belonged to (1 = no happy face, 2 = happy face) and 2) the tip percentage left.**

**i. Obtain the appropriate test statistic. From the SPSS menus choose Analyze and Compare Means, followed by the appropriate test.**

**j. Using the descriptive statistics from the SPSS printout, calculate the F-Max statistic. Also, examine the p-value (i.e., significance level) for Levene's test. Based on the results of these two statistics, do you feel that the homogeneity of variance assumption has been violated? Explain.**

**k. What is the value of the t statistic and probability value on the SPSS printout. Note: You need to be consistent with your conclusion in question #10. Your choice of statistic on the printout should reflect whether or not you felt the assumption was violated.**