Question

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 result

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

Service Times (seconds)

Restaurant X -

81
126
122
142
263
181
124
153
163
214
329
310
178
116
160
146
94
236
242
187
153
199
167
125
67
203
173
121
137
170
185
202
232
193
349
302
212
193
180
184
108
145
175
158
173
160
162
122
132
307

Restaurant Y
102
122
153
118
171
137
105
126
126
124
137
131
223
208
294
130
91
140
239
147
140
205
145
139
134
150
160
135
173
135
243
231
248
239
229
169
82
104
59
174
78
145
146
103
125
146
135
185
149
126

Construct a

9090​%

confidence interval of the mean​ drive-through service times at dinner for Restaurant X.

sec less than< μ less than< sec

Answer 1

Answer:-

a) Confidence interval for Restaurant A

Page two

Confidence interval for Restaurant Y

Thanks dear student