Question

4 What is the critical F-value for a dataset that has 4 groups and 20 total participants? 6. What are the group means for: a) Starbucks b) Bigby: Your friends are loyal customers to three big coffee chains and they all claim that their coffee shop tastes the best. You seem to think all the coffee tastes the same. However, being a budding statistician and experimentalist, you put the hypotheses to the test. You recruit 24 people to taste the basic coffee from the three coffee chains. Eight individuals taste Starbucks, eight taste Bigby, and eight taste Tim Hortons. You ask them to rate their enjoyment of the coffee on a 1 to 10 scale. Here are the data: c) Tim Hortons: Starbucks Bigby Tim Hortons 7. What is the Grand Mean for the data? 1 7 4 7 4 2 8 5 5 8 3 8 What are the Between Groups Sum of Squares ...)? 3 8 3 9 6 5 9 10 7 6 5 Are the data within each group roughly normally distributed? How do you know?

Answer 1

F-statistic value = 31.0666 P-value = 0 Data Summary Groups N Mean Std. Dev. Std. Error Group 1 8 3 1.7728 0.6268 Group 2 8 8.25 1.0351 0.366 Group 3 8 5.375 1.0607 0.375 ANOVA Summary Sum of Squares Degrees of Freedom Mean Square Source F-Stat P-Value DF SS MS Between Groups 2 110.5833 55.2917 31.0666 0 Within Groups 21 37.3754 1.7798 Total: 23 147.9587

ANSWER A faltical valve- &- meg 55.297 7198 mbu = 31-0666 6 group means .24 Students & 8=3 Bigby & sig Exg Eag 66. 42 = 8.25 Tim Hortongas - Ext = 42 = 5.375 8. Enixa grand mean = Eni 8x8) + (8.25x8) + (537588) 8 +848 24 +66 +43 5.5417 1 24 3 Between -Groups sum of swary les Bellwech 110.5833 (from above table) CS Scanned with CamScanner