Question

Refer to the accompanying data set of mean​ drive-through service times at dinner in seconds at...

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.

Service Times (seconds)

Restaurant X

Restaurant Y

80

80

124

124

118

118

147

147

264

264

102

102

127

127

155

155

112

112

174

174

183

183

119

119

149

149

164

164

216

216

133

133

112

112

120

120

133

133

125

125

336

336

307

307

173

173

110

110

155

155

138

138

133

133

229

229

210

210

295

295

151

151

93

93

236

236

238

238

185

185

124

124

93

93

135

135

247

247

142

142

156

156

198

198

170

170

117

117

66

66

139

139

203

203

151

151

146

146

135

135

197

197

179

179

115

115

145

145

175

175

152

152

152

152

137

137

164

164

135

135

186

186

200

200

228

228

196

196

356

356

245

245

236

236

249

249

232

232

228

228

303

303

211

211

200

200

179

179

190

190

164

164

82

82

108

108

54

54

168

168

108

108

145

145

177

177

152

152

167

167

80

80

149

149

140

140

103

103

125

125

154

154

168

168

125

125

132

132

312

312

149

149

135

135

183

183

151

151

128

128

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