Question

Refer to the accompanying data set of mean​ drive-through service times at dinner in seconds at two fast food restaurants. Construct a 99​% confidence interval estimate of the mean​ drive-through service time for Restaurant X at​ dinner; then do the same for Restaurant Y. Compare the results. LOADING... Click the icon to view the data on​ drive-through service times. Construct a 99​% confidence interval of the mean​ drive-through service times at dinner for Restaurant X. nothing secless thanmuless than nothing sec ​(Round to one decimal place as​ needed.) Construct a 99​% confidence interval of the mean​ drive-through service times at dinner for Restaurant Y. nothing secless thanmuless than nothing sec ​(Round to one decimal place as​ needed.)

Compare the results. A. The confidence interval estimates for the two restaurants overlap​, so there does not appear to be a significant difference between the mean dinner times at the two restaurants. B. The confidence interval estimates for the two restaurants overlap​, so it appears that Restaurant Upper Y has a faster mean service time than Restaurant Upper X. C. The confidence interval estimates for the two restaurants do not overlap​, so there does not appear to be a significant difference between the mean dinner times at the two restaurants. D. The confidence interval estimates for the two restaurants do not overlap​, so it appears that Restaurant Upper Y has a faster mean service time than Restaurant Upper X.

Restaurant X   Restaurant Y
87   96
121   130
116   152
150   117
265   180
180   132
126   106
151   128
167   124
217   129
337   133
307   133
176   228
117   212
154   293
147   124
96   89
234   134
235   241
186   139
155   147
199   197
164   150
117   148
67   132
197   147
181   153
115   130
145   168
172   133
192   238
200   231
234   255
191   239
354   231
310   173
208   87
196   109
179   53
191   172
102   79
144   149
174   144
151   99
172   129
154   152
166   127
125   185
140   146
305   127

Answer 1