A nutritionist is interested in determining the decrease in cholesterol level which a person can achieve by following a particular diet which is low in fat and high in fiber. Nine subjects are randomly selected to try the diet for six months, and their cholesterol levels are measured both before and after the diet. Use the sign test to analyze the results. The results of the study are as follows. Cholesterol Levels Subject 1 2 34 4 5 6 7 8 6 Before Diet 167 178 169 196 188 182 154 158 169 After Diet 164 172 159 190 177 175 149 158 155 Copy Data Step 1 of 2: Find the value of the test statistic. Round your answer to two decimal places, if necessary. Answer 2 Points Tables Keypad Keyboard Shortcuts A nutritionist is interested in determining the decrease in cholesterol level which a person can achieve by following a particular diet which is low in fat and high in fiber. Nine subjects are randomly selected to try the diet for six months, and their cholesterol levels are measured both before and after the diet. Use the sign test to analyze the results. The results of the study are as follows. Cholesterol Levels Subject 1 2 3 4 5 6 7 8 9 Before Diet 167 178 169 196 188 182 154 158 169 After Diet 164 172 159 190 177 175 149 158 155 Copy Data Step 2 of 2: Can the nutritionist conclude that there is a significant decrease in the average cholesterol level when the diet is used? We don't have any knowledge about the distribution of the data. Use a = 0.01. Answer 2 Points Tables Keypad Next Keyboard Shortcuts O We reject the null hypothesis. There is sufficient evidence, at the 0.01 level of significance, to support the hypothesis that there is a significant decrease in the average cholesterol level when the diet is used. We reject the null hypothesis. There is not sufficient evidence, at the 0.01 level of significance, to support the hypothesis that there is a significant decrease in the average cholesterol level when the diet is used. We fail to reject the null hypothesis. There is not sufficient evidence, at the 0.01 level of significance, to support the hypothesis that there is a significant decrease in the average cholesterol level when the diet is used. We fail to reject the null hypothesis. There is sufficient evidence, at the 0.01 level of significance, to support the hypothesis that there is a significant decrease in the average cholesterol level when the diet is used.