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com/courses/445715/quizzes/1056002/take A scientist was interested in determining if the Paleo diet plan worked. They randomly selected 4 people that were interested in trying a new diet plan. They recorded their initial weights before starting the diet plan. After six weeks, their weight was taken again. How would you check the normality assumptions for this test? 1 2 3 4 Initial weight 150 167 129 194 Weight six weeks 172 157 124 190 later Check to see if np and n(1-p) are greater than or equal to 15. The sample size is large enough that you can assume normality. Find the differences between initial weight and weight six weeks later. Make a dotplot of the differences and look for outliers. Make a plot of the initial weights and the six week later weights. Look for outliers. D Question 6 3 pts An informed home owner wants to test samples of water in their home to ensure that the average amount of mercury is less than 2 ppb. What would be the appropriate alternative hypothesis? O Ha: / = 2 ppb O Ha: u 2 ppb O Ha: xbar > 2 ppb O Ha: xbar