Displacement (liters)	Horsepower
4.2	439
5.3	521
3.2	327
4.3	357
1.9	205
1.9	263
2.9	228
2.9	304
4.3	409
2.1	316
3.8	413
1.6	120
1.5	177
4.3	562
2.4	174
2.5	174
2.5	221
2.1	152
2.5	309
3.7	262
6.5	307
2.1	243
3.8	304
3.6	305
4.9	389
5.2	544
3.7	269
3.1	259
5.9	431
2.3	180
1.4	87
1.7	136
1.5	87
1.5	114
3.9	291
3.3	272
3.7	314
2.5	203
3.6	273
3.6	305
1.5	134
2.1	140
1.8	149
5.2	427
1.9	209
3.9	299
3.8	338
2.1	269
1.9	226
2.8	291
1.6	100
1.9	152
2.5	162
2.5	175
2.3	264
2.1	172
1.4	97
2.7	158
4.2	237
2.6	181
1.5	106
6.5	490
2.6	173
2.1	200
2.1	142
2.1	114
3.5	275

The cases that make up this dataset are types of cars. The data include the engine size or displacement (in liters) and horsepower (HP) of 67 vehicles sold in a certain country in 2011. Use the SRM of the horsepower on the engine displacement to complete parts (a) through (c). g Click the icon to view the data table. (I) (a) A manufacturer offers 2.9 and 3.7 liter engines in a particular model car. Based on these data, how much more horsepower should one expect the larger engine to produce? Give your answer as a 95% confidence interval. [D to El] (Round to the nearest integer as needed.)