Refer to the accompanying data set of meandrive-through service times at dinner in seconds at two fast food restaurants. Construct a 99% confidence interval estimate of the meandrive-through service time for Restaurant X atdinner; then do the same for Restaurant Y. Compare the results.

Restaurant X

82 181 336 143 155 198 189 307 102 158

122 126 304 93 200 176 194 213 148 164

123 154 179 234 166 118 236 197 176 128

142 158 107 242 126 142 195 183 153 136

264 212 156 187 67 177 356 184 167 310

Restaurant Y

99 134 136 122 145 144 242 171 73 149

127 113 132 91 201 156 231 89 145 129

157 126 229 135 146 136 255 106 143 189

112 124 208 245 148 170 236 55 96 149

173 127 293 145 141 139 237 168 122 127