10q3r1 (4) Body weight Bench press 148 145 176 148 154 133 189 156 181 166 217 174 210 168 150 139 137 109 151 119 172 138 219 167 142 131 143 119 151 164 136 124 149 147 129 134 219 162 169 140 149 180 187 156 198 149 156 131 220 149 154 138 212 147 122 122 133 163 136 136 An exercise science major wants to try to use body weight to predict how much someone can bench press. He collects the data shown below on 30 male students. Both quantities are measured in pounds. Assignment 10q3 data a) What type of association does there appear to be between these two variables? can not be determined no association negative association positive association b) Compute a 95% confidence interval for the average bench press of 150 pound males. What is the lower limit? Give your answer to two decimal places. c) Compute a 95% confidence interval for the average bench press of 150 pound males. What is the upper limit? Give your answer to two decimal places. d) Compute a 95% prediction interval for the bench press of a 150 pound male. What is the lower limit? Give your answer to two decimal places. e) Compute a 95% prediction interval for the bench press of a 150 pound male. What is the upper limit? Give your answer to two decimal places. OO O

Question
10q3r1 (4)
Body weight Bench press
148
145
176
148
154
133
189
156
181
166
217
174
210
168
150
139
137
109
151
119
172
138
219
167
142
131
143
119
151
164
136
124
149
147
129
134
219
162
169
140
149
180
187
156
198
149
156
131
220
149
154
138
212
147
122
122
133
163
136
136

Image Transcription

10q3r1 (4) Body weight Bench press 148 145 176 148 154 133 189 156 181 166 217 174 210 168 150 139 137 109 151 119 172 138 219 167 142 131 143 119 151 164 136 124 149 147 129 134 219 162 169 140 149 180 187 156 198 149 156 131 220 149 154 138 212 147 122 122 133 163 136 136

An exercise science major wants to try to use body weight to predict how much someone can bench press. He collects the
data shown below on 30 male students. Both quantities are measured in pounds.
Assignment 10q3 data
a) What type of association does there appear to be between these two variables?
can not be determined
no association
negative association
positive association
b) Compute a 95% confidence interval for the average bench press of 150 pound males. What is the lower limit? Give your
answer to two decimal places.
c) Compute a 95% confidence interval for the average bench press of 150 pound males. What is the upper limit? Give your
answer to two decimal places.
d) Compute a 95% prediction interval for the bench press of a 150 pound male. What is the lower limit? Give your answer
to two decimal places.
e) Compute a 95% prediction interval for the bench press of a 150 pound male. What is the upper limit? Give your answer
to two decimal places.
OO O

Image Transcription

An exercise science major wants to try to use body weight to predict how much someone can bench press. He collects the data shown below on 30 male students. Both quantities are measured in pounds. Assignment 10q3 data a) What type of association does there appear to be between these two variables? can not be determined no association negative association positive association b) Compute a 95% confidence interval for the average bench press of 150 pound males. What is the lower limit? Give your answer to two decimal places. c) Compute a 95% confidence interval for the average bench press of 150 pound males. What is the upper limit? Give your answer to two decimal places. d) Compute a 95% prediction interval for the bench press of a 150 pound male. What is the lower limit? Give your answer to two decimal places. e) Compute a 95% prediction interval for the bench press of a 150 pound male. What is the upper limit? Give your answer to two decimal places. OO O

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