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A data set from a study that examined the effect of a specific diet on blood pressure is provided on the course web page. Participants (n = 72) were randomly assigned either to a group that was put on the diet (Diet = Present) or to a group that was not put on the diet (Diet = Absent), and researchers wanted to know whether the diet had a significant impact on blood pressure. The other variables in the data set are drug (X, Y, or Z) and a biofeedback condition (present or absent), but we wish to focus on the diet effect here. Test whether there is a statistically significant difference in mean blood pressure between the diet groups. Report the appropriate test statistic, df, and p-value. Biofeedback Drug Diet BldPres Present X Absent 170 Present X Absent 175 Present X Absent 165 Present X Absent 180 Present X Absent 160 Present X Absent 158 Present X Present 161 Present X Present 173 Present X Present 157 Present X Present 152 Present X Present 181 Present X Present 190 Present Y Absent 186 Present Y Absent 194 Present Y Absent 201 Present Y Absent 215 Present Y Absent 219 Present Y Absent 209 Present Y Present 164 Present Y Present 166 Present Y Present 159 Present Y Present 182 Present Y Present 187 Present Y Present 174 Present Z Absent 180 Present Z Absent 187 Present Z Absent 199 Present Z Absent 170 Present Z Absent 204 Present Z Absent 194 Present Z Present 162 Present Z Present 184 Present Z Present 183 Present Z Present 156 Present Z Present 180 Present Z Present 173 Absent X Absent 173 Absent X Absent 194 Absent X Absent 197 Absent X Absent 190 Absent X Absent 176 Absent X Absent 198 Absent X Present 164 Absent X Present 190 Absent X Present 169 Absent X Present 164 Absent X Present 176 Absent X Present 175 Absent Y Absent 189 Absent Y Absent 194 Absent Y Absent 217 Absent Y Absent 206 Absent Y Absent 199 Absent Y Absent 195 Absent Y Present 171 Absent Y Present 173 Absent Y Present 196 Absent Y Present 199 Absent Y Present 180 Absent Y Present 203 Absent Z Absent 202 Absent Z Absent 228 Absent Z Absent 190 Absent Z Absent 206 Absent Z Absent 224 Absent Z Absent 204 Absent Z Present 205 Absent Z Present 199 Absent Z Present 170 Absent Z Present 160 Absent Z Present 179 Absent Z Present 179

A data set from a study that examined the effect of a specific diet on blood pressure is provided on the course web page. Participants (n = 72) were randomly assigned either to a group that was put on the diet (Diet = Present) or to a group that was not put on the diet (Diet = Absent), and researchers wanted to know whether the diet had a significant impact on blood pressure. The other variables in the data set are drug (X, Y, or Z) and a biofeedback condition (present or absent), but we wish to focus on the diet effect here. Test whether there is a statistically significant difference in mean blood pressure between the diet groups. Report the appropriate test statistic, df, and p-value. Biofeedback Drug Diet BldPres Present X Absent 170 Present X Absent 175 Present X Absent 165 Present X Absent 180 Present X Absent 160 Present X Absent 158 Present X Present 161 Present X Present 173 Present X Present 157 Present X Present 152 Present X Present 181 Present X Present 190 Present Y Absent 186 Present Y Absent 194 Present Y Absent 201 Present Y Absent 215 Present Y Absent 219 Present Y Absent 209 Present Y Present 164 Present Y Present 166 Present Y Present 159 Present Y Present 182 Present Y Present 187 Present Y Present 174 Present Z Absent 180 Present Z Absent 187 Present Z Absent 199 Present Z Absent 170 Present Z Absent 204 Present Z Absent 194 Present Z Present 162 Present Z Present 184 Present Z Present 183 Present Z Present 156 Present Z Present 180 Present Z Present 173 Absent X Absent 173 Absent X Absent 194 Absent X Absent 197 Absent X Absent 190 Absent X Absent 176 Absent X Absent 198 Absent X Present 164 Absent X Present 190 Absent X Present 169 Absent X Present 164 Absent X Present 176 Absent X Present 175 Absent Y Absent 189 Absent Y Absent 194 Absent Y Absent 217 Absent Y Absent 206 Absent Y Absent 199 Absent Y Absent 195 Absent Y Present 171 Absent Y Present 173 Absent Y Present 196 Absent Y Present 199 Absent Y Present 180 Absent Y Present 203 Absent Z Absent 202 Absent Z Absent 228 Absent Z Absent 190 Absent Z Absent 206 Absent Z Absent 224 Absent Z Absent 204 Absent Z Present 205 Absent Z Present 199 Absent Z Present 170 Absent Z Present 160 Absent Z Present 179 Absent Z Present 179

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A data set from a study that examined the effect of a specific diet on blood pressure is provided on the course web page. Participants (n = 72) were randomly assigned either to a group that was put on the diet (Diet = Present) or to a group that was not put on the diet (Diet = Absent), and researchers wanted to know whether the diet had a significant impact on blood pressure. The other variables in the data set are drug (X, Y, or Z) and a biofeedback condition (present or absent), but we wish to focus on the diet effect here.

Test whether there is a statistically significant difference in mean blood pressure between the diet groups. Report the appropriate test statistic, df, and p-value.

Biofeedback Drug Diet BldPres
Present X Absent 170
Present X Absent 175
Present X Absent 165
Present X Absent 180
Present X Absent 160
Present X Absent 158
Present X Present 161
Present X Present 173
Present X Present 157
Present X Present 152
Present X Present 181
Present X Present 190
Present Y Absent 186
Present Y Absent 194
Present Y Absent 201
Present Y Absent 215
Present Y Absent 219
Present Y Absent 209
Present Y Present 164
Present Y Present 166
Present Y Present 159
Present Y Present 182
Present Y Present 187
Present Y Present 174
Present Z Absent 180
Present Z Absent 187
Present Z Absent 199
Present Z Absent 170
Present Z Absent 204
Present Z Absent 194
Present Z Present 162
Present Z Present 184
Present Z Present 183
Present Z Present 156
Present Z Present 180
Present Z Present 173
Absent X Absent 173
Absent X Absent 194
Absent X Absent 197
Absent X Absent 190
Absent X Absent 176
Absent X Absent 198
Absent X Present 164
Absent X Present 190
Absent X Present 169
Absent X Present 164
Absent X Present 176
Absent X Present 175
Absent Y Absent 189
Absent Y Absent 194
Absent Y Absent 217
Absent Y Absent 206
Absent Y Absent 199
Absent Y Absent 195
Absent Y Present 171
Absent Y Present 173
Absent Y Present 196
Absent Y Present 199
Absent Y Present 180
Absent Y Present 203
Absent Z Absent 202
Absent Z Absent 228
Absent Z Absent 190
Absent Z Absent 206
Absent Z Absent 224
Absent Z Absent 204
Absent Z Present 205
Absent Z Present 199
Absent Z Present 170
Absent Z Present 160
Absent Z Present 179
Absent Z Present 179
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