Question Car Class Displacement Fuel Type Hwy MPG 1 Compact 3 1 P 25 2 Compact 3 1 P 25 3 Compact 3 P 25 4 Compact 3 P 25 5 Compact 3 P 25 6 Compact 3 P 25 7 Compact 2 4 P 25 8 Compact 3 5 P 25 9 Compact 3 P 25 10 Compact 2 4 P 24 11 Compact 2 8 P 24 12 Compact 2 5 P 24 13 Compact 3 P 24 14 Compact 2 5 P 24 15 Compact 2 4 R 24 16 Compact 5 3 P 24 17 Compact 6 P 24 18 Compact 3 5 R 24 19 Compact 3 5 R 24 20 Compact 3 5 R 24 21 Compact 3 5 R 24 22 Compact 3 5 R 24 23 Compact 3 8 R 24 24 Compact 3 5 R 24 25 Compact 3 5 P 24 26 Compact 5 3 P 24 27 Compact 4 6 P 24 28 Compact 3 5 P 24 29 Compact 4 2 P 24 30 Compact 4 6 P 24 31 Compact 4 6 P 24 32 Compact 4 6 P 24 33 Compact 3 5 P 24 34 Compact 3 6 P 24 35 Compact 3 2 P 24 36 Compact 3 2 P 24 37 Compact 3 5 R 24 38 Compact 2 4 R 24 39 Compact 3 5 R 24 40 Compact 3 5 R 24 41 Compact 3 2 P 23 42 Compact 4 2 P 23 43 Compact 4 8 P 23 44 Compact 4 8 P 23 45 Compact 3 5 P 23 46 Compact 4 6 R 23 47 Compact 4 6 R 23 48 Compact 5 7 R 23 49 Compact 5 7 R 23 50 Compact 4 6 R 23 51 Compact 4 6 R 23 52 Compact 4 2 P 23 53 Compact 4 2 P 23 54 Compact 4 8 P 23 55 Compact 3 5 P 23 56 Compact 3 P 23 57 Compact 4 4 P 23 58 Compact 3 P 22 59 Compact 3 9 R 22 60 Compact 3 5 P 22 61 Compact 4 2 P 22 62 Compact 4 2 P 22 63 Compact 4 6 R 22 64 Compact 4 6 R 22 65 Compact 3 5 R 22 66 Compact 5 7 R 22 67 Compact 5 7 R 22 68 Compact 3 5 R 22 69 Compact 4 8 P 22 70 Compact 3 P 22 71 Compact 4 2 P 22 72 Compact 5 P 22 73 Compact 3 5 P 22 74 Compact 5 5 P 22 75 Compact 4 2 P 21 76 Compact 5 5 P 21 77 Compact 5 5 P 21 78 Compact 4 5 P 21 79 Compact 5 5 P 21 80 Compact 4 6 P 21 81 Compact 4 2 P 20 82 Compact 4 2 P 20 83 Compact 6 P 20 84 Compact 4 5 P 20 85 Compact 5 5 P 20 86 Compact 6 P 19 87 Compact 5 2 P 19 88 Compact 5 2 P 19 89 Compact 4 4 P 19 90 Compact 5 5 P 19 91 Compact 6 2 P 19 92 Compact 6 2 P 18 93 Compact 6 2 P 18 94 Compact 6 1 P 18 95 Compact 6 1 P 18 96 Compact 4 6 R 18 97 Compact 4 6 R 18 98 Compact 6 1 P 18 99 Compact 5 5 P 17 100 Compact 5 5 P 17 101 Compact 6 2 P 17 102 Compact 6 P 17 103 Compact 5 5 P 17 104 Compact 5 P 17 105 Compact 5 P 17 106 Compact 5 5 P 16 107 Compact 6 P 16 108 Compact 5 5 P 16 109 Compact 6 P 16 110 Compact 5 7 P 16 111 Compact 5 7 P 15 112 Midsize 1 8 R 37 113 Midsize 2 R 35 114 Midsize 1 6 R 35 115 Midsize 1 8 R 35 116 Midsize 1 6 R 34 117 Midsize 2 4 R 34 118 Midsize 2 R 33 119 Midsize 1 6 R 33 120 Midsize 2 R 33 121 Midsize 2 R 33 122 Midsize 1 8 R 33 123 Midsize 2 5 R 33 124 Midsize 2 R 33 125 Midsize 1 6 R 32 126 Midsize 1 6 R 32 127 Midsize 1 6 R 32 128 Midsize 2 R 32 129 Midsize 2 4 R 32 130 Midsize 2 R 32 131 Midsize 1 8 R 32 132 Midsize 2 5 R 32 133 Midsize 2 4 R 32 134 Midsize 2 P 31 135 Midsize 2 4 R 31 136 Midsize 2 R 31 137 Midsize 2 R 31 138 Midsize 2 4 R 31 139 Midsize 2 4 R 31 140 Midsize 2 4 R 31 141 Midsize 2 4 R 31 142 Midsize 2 4 R 31 143 Midsize 2 2 R 31 144 Midsize 2 4 R 31 145 Midsize 2 4 R 31 146 Midsize 2 5 R 31 147 Midsize 1 8 R 31 148 Midsize 2 R 31 149 Midsize 2 4 R 31 150 Midsize 2 4 R 31 151 Midsize 2 P 30 152 Midsize 2 4 R 30 153 Midsize 2 4 R 30 154 Midsize 2 R 30 155 Midsize 2 4 R 30 156 Midsize 2 4 R 30 157 Midsize 2 4 R 30 158 Midsize 2 4 R 30 159 Midsize 2 R 30 160 Midsize 2 5 R 30 161 Midsize 2 4 R 30 162 Midsize 2 P 29 163 Midsize 2 P 29 164 Midsize 2 P 29 165 Midsize 2 P 29 166 Midsize 2 P 29 167 Midsize 2 3 R 29 168 Midsize 2 3 R 29 169 Midsize 2 R 29 170 Midsize 2 R 29 171 Midsize 3 5 R 29 172 Midsize 2 5 R 29 173 Midsize 2 5 R 29 174 Midsize 2 5 R 29 175 Midsize 2 5 R 29 176 Midsize 3 5 R 29 177 Midsize 3 5 R 29 178 Midsize 3 5 R 29 179 Midsize 2 5 P 29 180 Midsize 2 P 29 181 Midsize 3 5 R 29 182 Midsize 1 8 R 29 183 Midsize 2 4 R 29 184 Midsize 2 3 R 29 185 Midsize 2 3 R 29 186 Midsize 2 3 R 29 187 Midsize 3 5 R 29 188 Midsize 2 4 P 28 189 Midsize 2 4 P 28 190 Midsize 2 P 28 191 Midsize 3 P 28 192 Midsize 3 P 28 193 Midsize 2 5 P 28 194 Midsize 2 5 P 28 195 Midsize 2 4 P 28 196 Midsize 2 4 P 28 197 Midsize 2 4 P 28 198 Midsize 2 4 P 28 199 Midsize 3 5 R 28 200 Midsize 2 R 28 201 Midsize 2 R 28 202 Midsize 2 R 28 203 Midsize 2 R 28 204 Midsize 3 9 R 28 205 Midsize 3 5 R 28 206 Midsize 3 3 R 28 207 Midsize 3 5 R 28 208 Midsize 3 5 R 28 209 Midsize 3 P 28 210 Midsize 2 3 P 28 211 Midsize 2 P 28 212 Midsize 3 8 R 28 213 Midsize 3 5 R 28 214 Midsize 2 3 R 28 215 Midsize 2 7 R 28 216 Midsize 2 3 R 28 217 Midsize 3 5 R 28 218 Midsize 2 3 R 28 219 Midsize 3 8 R 28 220 Midsize 3 5 R 28 221 Midsize 2 P 27 222 Midsize 3 1 P 27 223 Midsize 2 5 P 27 224 Midsize 2 5 P 27 225 Midsize 2 5 P 27 226 Midsize 2 5 P 27 227 Midsize 2 5 R 27 228 Midsize 2 5 R 27 229 Midsize 2 5 R 27 230 Midsize 2 5 R 27 231 Midsize 3 3 R 27 232 Midsize 3 5 P 27 233 Midsize 3 1 P 27 234 Midsize 3 P 27 235 Midsize 3 5 P 27 236 Midsize 3 5 P 27 237 Midsize 3 5 P 27 238 Midsize 2 7 R 27 239 Midsize 2 7 R 27 240 Midsize 2 7 R 27 241 Midsize 2 R 27 242 Midsize 2 7 R 27 243 Midsize 2 4 R 27 244 Midsize 3 R 26 245 Midsize 3 R 26 246 Midsize 3 6 R 26 247 Large 3 P 26 248 Large 3 P 26 249 Large 3 P 26 250 Large 2 P 26 251 Large 2 8 P 26 252 Large 2 5 P 26 253 Large 2 5 P 26 254 Large 2 5 P 26 255 Large 2 4 P 26 256 Large 2 4 P 26 257 Large 2 4 R 26 258 Large 3 5 R 26 259 Large 3 6 R 26 260 Large 3 3 R 26 261 Large 2 7 R 26 262 Large 2 7 R 26 263 Large 3 8 R 26 264 Large 3 3 R 26 265 Large 3 2 P 26 266 Large 3 5 P 26 267 Large 3 P 26 268 Large 3 P 26 269 Large 3 P 26 270 Large 2 3 P 26 271 Large 3 5 P 26 272 Large 2 3 P 26 273 Large 3 6 P 26 274 Large 3 6 R 26 275 Large 3 6 R 26 276 Large 3 6 R 26 277 Large 3 6 R 26 278 Large 3 6 R 26 279 Large 3 6 R 26 280 Large 3 5 R 26 281 Large 3 5 R 26 282 Large 3 P 25 283 Large 3 5 P 25 284 Large 2 5 P 25 285 Large 2 5 P 25 286 Large 2 5 P 25 287 Large 2 5 P 25 288 Large 3 5 R 25 289 Large 4 2 P 25 290 Large 4 2 P 25 291 Large 4 2 P 25 292 Large 3 8 R 25 293 Large 3 1 P 25 294 Large 3 P 25 295 Large 3 P 25 296 Large 3 P 25 297 Large 3 P 25 298 Large 3 5 P 25 299 Large 3 5 P 25 300 Large 3 8 P 25 301 Large 3 5 P 25 302 Large 5 3 P 25 303 Large 3 6 R 25 304 Large 3 6 R 25 305 Large 3 6 R 25 306 Large 3 6 R 25 307 Large 2 4 R 25 308 Large 3 R 25 309 Large 3 R 25 310 Large 3 R 25 311 Large 3 R 25 Consider the addition of the dummy variables ClassMidsize and ClassLarge to the simple linear regression model in part (a) The value of ClassMidsize is 1 if the car is a midsize car and 0 otherwise the value of ClassLarge is 1 if the car is a large car and 0 otherwise Thus, for a compact car, the value of ClassMidsize and the value of ClassLarge are both 0 Develop the estimated regression equation that can be used to predict the fuel efficiency for highway driving, given the engine's displacement and the dummy variables ClassMidsize and ClassLarge Let x 1 represent engine's displacement Let x 2 represent variable ClassMidsize Let x 3 represent variable ClassLarge If required, round your answers to four decimal places For subtractive or negative numbers use a minus sign even if there is a sign before the blank (Example 300) x 1 x 2 x 3 How much of the variation in the sample values of HwyMPG does this estimated regression equation explain If required, round your answer to two decimal places (d) Use significance level of 0 05 to determine whether the dummy variables added to the model in part (c) are significant Explain The input in the box below will not be graded, but may be reviewed and considered by your instructor (e) Consider the addition of the dummy variable FuelPremium, where the value of FuelPremium is 1 if the car uses premium fuel and 0 if the car uses regular fuel Develop the estimated regression equation that can be used to predict the fuel efficiency for highway driving, given the engine's displacement, the dummy variables ClassMidsize and ClassLarge, and the dummy variable FuelPremium Let x 1 represents engine's displacement Let x 2 represents variable ClassMidsize Let x 3 represents variable ClassLarge Let x 4 represents variable FuelPremium If required, round your answers to four decimal places For subtractive or negative numbers use a minus sign even if there is a sign before the blank (Example 300) x 1 x 2 x 3 x 4 How much of the variation in the sample values of HwyMPG does this estimated regression equation explain If required, round your answer to two decimal places (f) For the estimated regression equation developed in part (e), test for the significance of an overall regression relationship and relationships between each of the independent variables and the dependent variable using the 0 05 level of significance for each test Explain The input in the box below will not be graded, but may be reviewed and considered by your instru Comment Flag Question

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Question: Car Class Displacement Fuel Type Hwy MPG 1 Compact 3.1 P 25 2 Compact 3.1 P 25 3 Compact 3 P 25 4 Compact

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Car	Class	Displacement	Fuel Type	Hwy MPG
1	Compact	3.1	P	25
2	Compact	3.1	P	25
3	Compact	3	P	25
4	Compact	3	P	25
5	Compact	3	P	25
6	Compact	3	P	25
7	Compact	2.4	P	25
8	Compact	3.5	P	25
9	Compact	3	P	25
10	Compact	2.4	P	24
11	Compact	2.8	P	24
12	Compact	2.5	P	24
13	Compact	3	P	24
14	Compact	2.5	P	24
15	Compact	2.4	R	24
16	Compact	5.3	P	24
17	Compact	6	P	24
18	Compact	3.5	R	24
19	Compact	3.5	R	24
20	Compact	3.5	R	24
21	Compact	3.5	R	24
22	Compact	3.5	R	24
23	Compact	3.8	R	24
24	Compact	3.5	R	24
25	Compact	3.5	P	24
26	Compact	5.3	P	24
27	Compact	4.6	P	24
28	Compact	3.5	P	24
29	Compact	4.2	P	24
30	Compact	4.6	P	24
31	Compact	4.6	P	24
32	Compact	4.6	P	24
33	Compact	3.5	P	24
34	Compact	3.6	P	24
35	Compact	3.2	P	24
36	Compact	3.2	P	24
37	Compact	3.5	R	24
38	Compact	2.4	R	24
39	Compact	3.5	R	24
40	Compact	3.5	R	24
41	Compact	3.2	P	23
42	Compact	4.2	P	23
43	Compact	4.8	P	23
44	Compact	4.8	P	23
45	Compact	3.5	P	23
46	Compact	4.6	R	23
47	Compact	4.6	R	23
48	Compact	5.7	R	23
49	Compact	5.7	R	23
50	Compact	4.6	R	23
51	Compact	4.6	R	23
52	Compact	4.2	P	23
53	Compact	4.2	P	23
54	Compact	4.8	P	23
55	Compact	3.5	P	23
56	Compact	3	P	23
57	Compact	4.4	P	23
58	Compact	3	P	22
59	Compact	3.9	R	22
60	Compact	3.5	P	22
61	Compact	4.2	P	22
62	Compact	4.2	P	22
63	Compact	4.6	R	22
64	Compact	4.6	R	22
65	Compact	3.5	R	22
66	Compact	5.7	R	22
67	Compact	5.7	R	22
68	Compact	3.5	R	22
69	Compact	4.8	P	22
70	Compact	3	P	22
71	Compact	4.2	P	22
72	Compact	5	P	22
73	Compact	3.5	P	22
74	Compact	5.5	P	22
75	Compact	4.2	P	21
76	Compact	5.5	P	21
77	Compact	5.5	P	21
78	Compact	4.5	P	21
79	Compact	5.5	P	21
80	Compact	4.6	P	21
81	Compact	4.2	P	20
82	Compact	4.2	P	20
83	Compact	6	P	20
84	Compact	4.5	P	20
85	Compact	5.5	P	20
86	Compact	6	P	19
87	Compact	5.2	P	19
88	Compact	5.2	P	19
89	Compact	4.4	P	19
90	Compact	5.5	P	19
91	Compact	6.2	P	19
92	Compact	6.2	P	18
93	Compact	6.2	P	18
94	Compact	6.1	P	18
95	Compact	6.1	P	18
96	Compact	4.6	R	18
97	Compact	4.6	R	18
98	Compact	6.1	P	18
99	Compact	5.5	P	17
100	Compact	5.5	P	17
101	Compact	6.2	P	17
102	Compact	6	P	17
103	Compact	5.5	P	17
104	Compact	5	P	17
105	Compact	5	P	17
106	Compact	5.5	P	16
107	Compact	6	P	16
108	Compact	5.5	P	16
109	Compact	6	P	16
110	Compact	5.7	P	16
111	Compact	5.7	P	15
112	Midsize	1.8	R	37
113	Midsize	2	R	35
114	Midsize	1.6	R	35
115	Midsize	1.8	R	35
116	Midsize	1.6	R	34
117	Midsize	2.4	R	34
118	Midsize	2	R	33
119	Midsize	1.6	R	33
120	Midsize	2	R	33
121	Midsize	2	R	33
122	Midsize	1.8	R	33
123	Midsize	2.5	R	33
124	Midsize	2	R	33
125	Midsize	1.6	R	32
126	Midsize	1.6	R	32
127	Midsize	1.6	R	32
128	Midsize	2	R	32
129	Midsize	2.4	R	32
130	Midsize	2	R	32
131	Midsize	1.8	R	32
132	Midsize	2.5	R	32
133	Midsize	2.4	R	32
134	Midsize	2	P	31
135	Midsize	2.4	R	31
136	Midsize	2	R	31
137	Midsize	2	R	31
138	Midsize	2.4	R	31
139	Midsize	2.4	R	31
140	Midsize	2.4	R	31
141	Midsize	2.4	R	31
142	Midsize	2.4	R	31
143	Midsize	2.2	R	31
144	Midsize	2.4	R	31
145	Midsize	2.4	R	31
146	Midsize	2.5	R	31
147	Midsize	1.8	R	31
148	Midsize	2	R	31
149	Midsize	2.4	R	31
150	Midsize	2.4	R	31
151	Midsize	2	P	30
152	Midsize	2.4	R	30
153	Midsize	2.4	R	30
154	Midsize	2	R	30
155	Midsize	2.4	R	30
156	Midsize	2.4	R	30
157	Midsize	2.4	R	30
158	Midsize	2.4	R	30
159	Midsize	2	R	30
160	Midsize	2.5	R	30
161	Midsize	2.4	R	30
162	Midsize	2	P	29
163	Midsize	2	P	29
164	Midsize	2	P	29
165	Midsize	2	P	29
166	Midsize	2	P	29
167	Midsize	2.3	R	29
168	Midsize	2.3	R	29
169	Midsize	2	R	29
170	Midsize	2	R	29
171	Midsize	3.5	R	29
172	Midsize	2.5	R	29
173	Midsize	2.5	R	29
174	Midsize	2.5	R	29
175	Midsize	2.5	R	29
176	Midsize	3.5	R	29
177	Midsize	3.5	R	29
178	Midsize	3.5	R	29
179	Midsize	2.5	P	29
180	Midsize	2	P	29
181	Midsize	3.5	R	29
182	Midsize	1.8	R	29
183	Midsize	2.4	R	29
184	Midsize	2.3	R	29
185	Midsize	2.3	R	29
186	Midsize	2.3	R	29
187	Midsize	3.5	R	29
188	Midsize	2.4	P	28
189	Midsize	2.4	P	28
190	Midsize	2	P	28
191	Midsize	3	P	28
192	Midsize	3	P	28
193	Midsize	2.5	P	28
194	Midsize	2.5	P	28
195	Midsize	2.4	P	28
196	Midsize	2.4	P	28
197	Midsize	2.4	P	28
198	Midsize	2.4	P	28
199	Midsize	3.5	R	28
200	Midsize	2	R	28
201	Midsize	2	R	28
202	Midsize	2	R	28
203	Midsize	2	R	28
204	Midsize	3.9	R	28
205	Midsize	3.5	R	28
206	Midsize	3.3	R	28
207	Midsize	3.5	R	28
208	Midsize	3.5	R	28
209	Midsize	3	P	28
210	Midsize	2.3	P	28
211	Midsize	2	P	28
212	Midsize	3.8	R	28
213	Midsize	3.5	R	28
214	Midsize	2.3	R	28
215	Midsize	2.7	R	28
216	Midsize	2.3	R	28
217	Midsize	3.5	R	28
218	Midsize	2.3	R	28
219	Midsize	3.8	R	28
220	Midsize	3.5	R	28
221	Midsize	2	P	27
222	Midsize	3.1	P	27
223	Midsize	2.5	P	27
224	Midsize	2.5	P	27
225	Midsize	2.5	P	27
226	Midsize	2.5	P	27
227	Midsize	2.5	R	27
228	Midsize	2.5	R	27
229	Midsize	2.5	R	27
230	Midsize	2.5	R	27
231	Midsize	3.3	R	27
232	Midsize	3.5	P	27
233	Midsize	3.1	P	27
234	Midsize	3	P	27
235	Midsize	3.5	P	27
236	Midsize	3.5	P	27
237	Midsize	3.5	P	27
238	Midsize	2.7	R	27
239	Midsize	2.7	R	27
240	Midsize	2.7	R	27
241	Midsize	2	R	27
242	Midsize	2.7	R	27
243	Midsize	2.4	R	27
244	Midsize	3	R	26
245	Midsize	3	R	26
246	Midsize	3.6	R	26
247	Large	3	P	26
248	Large	3	P	26
249	Large	3	P	26
250	Large	2	P	26
251	Large	2.8	P	26
252	Large	2.5	P	26
253	Large	2.5	P	26
254	Large	2.5	P	26
255	Large	2.4	P	26
256	Large	2.4	P	26
257	Large	2.4	R	26
258	Large	3.5	R	26
259	Large	3.6	R	26
260	Large	3.3	R	26
261	Large	2.7	R	26
262	Large	2.7	R	26
263	Large	3.8	R	26
264	Large	3.3	R	26
265	Large	3.2	P	26
266	Large	3.5	P	26
267	Large	3	P	26
268	Large	3	P	26
269	Large	3	P	26
270	Large	2.3	P	26
271	Large	3.5	P	26
272	Large	2.3	P	26
273	Large	3.6	P	26
274	Large	3.6	R	26
275	Large	3.6	R	26
276	Large	3.6	R	26
277	Large	3.6	R	26
278	Large	3.6	R	26
279	Large	3.6	R	26
280	Large	3.5	R	26
281	Large	3.5	R	26
282	Large	3	P	25
283	Large	3.5	P	25
284	Large	2.5	P	25
285	Large	2.5	P	25
286	Large	2.5	P	25
287	Large	2.5	P	25
288	Large	3.5	R	25
289	Large	4.2	P	25
290	Large	4.2	P	25
291	Large	4.2	P	25
292	Large	3.8	R	25
293	Large	3.1	P	25
294	Large	3	P	25
295	Large	3	P	25
296	Large	3	P	25
297	Large	3	P	25
298	Large	3.5	P	25
299	Large	3.5	P	25
300	Large	3.8	P	25
301	Large	3.5	P	25
302	Large	5.3	P	25
303	Large	3.6	R	25
304	Large	3.6	R	25
305	Large	3.6	R	25
306	Large	3.6	R	25
307	Large	2.4	R	25
308	Large	3	R	25
309	Large	3	R	25
310	Large	3	R	25
311	Large	3	R	25

Consider the addition of the dummy variables ClassMidsize and ClassLarge to the simple linear regression model in part (a). The value of ClassMidsize is 1 if the car is a midsize car and 0 otherwise; the value of ClassLarge is 1 if the car is a large car and 0 otherwise. Thus, for a compact car, the value of ClassMidsize and the value of ClassLarge are both 0. Develop the estimated regression equation that can be used to predict the fuel efficiency for highway driving, given the engine's displacement and the dummy variables ClassMidsize and ClassLarge.
Let x₁ represent engine's displacement.
Let x₂ represent variable ClassMidsize.
Let x₃ represent variable ClassLarge.
If required, round your answers to four decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank. (Example: -300)
	= + x₁ + x₂ + x₃

How much of the variation in the sample values of HwyMPG does this estimated regression equation explain?
If required, round your answer to two decimal places.
%

(d)	Use significance level of 0.05 to determine whether the dummy variables added to the model in part (c) are significant. Explain.
	The input in the box below will not be graded, but may be reviewed and considered by your instructor.


(e)	Consider the addition of the dummy variable FuelPremium, where the value of FuelPremium is 1 if the car uses premium fuel and 0 if the car uses regular fuel. Develop the estimated regression equation that can be used to predict the fuel efficiency for highway driving, given the engine's displacement, the dummy variables ClassMidsize and ClassLarge, and the dummy variable FuelPremium.
Let x₁ represents engine's displacement.
Let x₂ represents variable ClassMidsize.
Let x₃ represents variable ClassLarge.
Let x₄ represents variable FuelPremium.
	If required, round your answers to four decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank. (Example: -300)
	= + x₁ + x₂ + x₃ + x₄

	How much of the variation in the sample values of HwyMPG does this estimated regression equation explain?
	If required, round your answer to two decimal places.
	%

(f)	For the estimated regression equation developed in part (e), test for the significance of an overall regression relationship and relationships between each of the independent variables and the dependent variable using the 0.05 level of significance for each test. Explain
The input in the box below will not be graded, but may be reviewed and considered by your instru