Question

7.2 #17

Refer to the accompanying data set of mean​ drive-through service times at dinner in seconds at two fast food restaurants. Construct a 90​% 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.

Click the icon to view the data on​ drive-through service times.

Construct a 90​% confidence interval of the mean​ drive-through service times at dinner for Restaurant X. Then do the same for Restaurant Y. Compare results.

___sec < μ < __sec

​(Round to one decimal place as​ needed.)

Restaurant X   Restaurant Y
88   96
123   125
115   154
149   118
265   177
178   136
125   113
150   129
166   127
217   130
335   128
309   132
181   223
115   213
159   292
149   126
92   92
236   132
239   244
185   140
151   147
204   203
171   144
122   138
62   136
201   144
180   156
111   138
142   173
170   137
183   238
200   234
227   252
196   235
347   231
302   171
205   83
195   101
184   51
186   169
111   74
153   144
178   146
158   98
173   124
157   146
169   127
118   183
139   153
307   132

Answer 1

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