ECON 219 Study Guide - Rice Krispies, Puffed Rice, Null Hypothesis

• School: McGill University
• Department: Economics (Arts)
• Course: ECON 219
• Professor: Kenneth Mac Kenzie

Document Summary

Data have been collected on nutrition for a suitably random sample of twelve popular dry cereals. For a standard serving of each cereal measurements were made of the numbers of units of protein, carbohydrates, fat, vitamina, and calories. Predict the number of calories of another cereal with 5 units of protein, 23 carbohydrate units, 1 fat unit, and 25 units of vitamin a. Since this is less than 0. 05, the increase is significant. Give a 90% confidence interval for the marginal contribution of a unit of carbohydrates based on the results in model i. t df = error df = 8 t = 1. 860 answer: Find the missing numbers in the analysis-of-variance table for model ii. Find pearson"s correlation coefficient for the carbo and fat data, and determine whether these two variables are significantly correlated. Carbo and fat data are not significantly correlated. Calories = 16. 71 + 3. 663 carbo + 9. 726 fat + 0. 0241 vita.