Weight Gain of Athletes A researcher wishes to see whether there is any difference in the weight gains of athletes following one of three special diets. Athletes are randomly assigned to three groups and placed on the diet for 6 weeks. The weight gains (in pounds) are shown here. At a=0.05, can the researcher conclude that there is a difference in the diets? Diet A: 6,7,3,4 Diet B: 10,11,12,13,14,6 Diet C: 8,2,3,4

Use alpha = .05. Travel Experience and Knowledge of Geography: Suppose you are interested in the relationship between travel experiences and knowledge of geography. You give 10 subjects a 15-item quiz on North American geography and ask each how many states and Canadian provinces they have visited. Subject Travel Score Knowledge Score 1 4 10 2 6. 15 3 7 8. 4 9 8. 7 12 10 7 14 15 8 15 13 15 15 10 17 14 Is there a relationship between travel experience and knowledge of geography? Be sure to state hypotheses, calculate the statistic by hand showing all of your work and provide all other related information and write your conclusion in APA format. Attach SPSS output with relevant portions highlighted and relevant comments marked on the output.

A study was done to look at the relationship between number of lovers college students have had in their lifetimes and their GPAs. The results of the survey are shown below.   Lovers 4 8 3 7 0 6 5 6 GPA 2.7 2.3 3.4 2.4 3.5 2.9 2.7 2.8        r2r2 =  (Round to two decimal places)    Interpret r2r2 :   There is a large variation in students' GPAs, but if you only look at students who have had a fixed number of lovers, this variation on average is reduced by 80%. Given any group of students who have all had the same number of lovers, 80% of all of these studetns will have the predicted GPA. 80% of all students will have the average GPA. There is a 80% chance that the regression line will be a good predictor for GPA based on the number of lovers a student has had.   The equation of the linear regression line is:   ˆyy^ =  + xx   (Please show your answers to two decimal places)   Use the model to predict the GPA of a college student who as had 7 lovers.GPA =  (Please round your…

The results for a blood test for a certain disease are shown in the table below. Based on the table, what is the prevalence of the disease? T+ T- Total D+ 290 10 300 D- 3219 481 3700 Total 3509 491 4000 A. 0.09 0.97 O B. 0.0725 290 Screenshot