(15) Consider a sample of nine wait times measured in seconds at a drive through coffee...

(15) Consider a sample of nine wait times measured in seconds at a drive through coffee shop. The sample mean is 95 and the sample standard deviation is 23.516. The population mean and standard deviation are 100 and 20 respectively. (1) What is the size of the sampling error in this case?

(3) What is the probability that the average wait time would be less than 80 seconds?
(3) What is the probability that the average wait time would be more than 109 seconds?
(5) What is the probability that the average wait time would be between 90 and 95 seconds?
(3) What is the probability that a customer waits more than 65 seconds?

Expert Solution

orchestra answered 1 year ago

Consider a sample of nine wait times measured in seconds at a drive through coffee shop....

Consider a sample of nine wait times measured in seconds at a drive through coffee shop. The sample mean is 95 and the sample standard deviation is 23.516. The population mean and standard deviation are 100 and 20 respectively. (1) What is the size of the sampling error in this case? (3) What is the probability that the average wait time would be less than 80 seconds? (3) What is the probability that the average wait time would be more...

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 9595% 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. Restaurant X Restaurant Y 83 104 117 124 117 149 142 118 264 172 182 138 118 110 152 125 162 125 215 126 336 135 308 138 176 230 116 208 159 ...

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 95% 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. Restaurant X Restaurant Y 88 103 116 124 114 153 148 119 265 171 183 132 121 106 156 120 161 131 209 125 331 138 305 139 174 223 115 209 154...

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 9090% 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 9090% confidence interval of the mean drive-through service times at dinner for Restaurant X. nothing secless than<muμless than<nothing sec (Round...

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 95% 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. Construct a 95% confidence interval of the mean drive-through service times at dinner for Restaurant X. Restaurant X Restaurant Y 80 97 123 128 120 154 146 116 267 176 182 135 120...

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 meandrive-through service time for Restaurant X at dinner; then do the same for Restaurant Y. Compare the results. Construct a 99% confidence interval of the mean drive-through service times at dinner for Restaurant X. Construct a 99% confidence interval of the mean drive-through service times at dinner for Restaurant Y. (Round to...

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 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...

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. Restaurant X Y 79 103 118 129 119 152 150 113 262 175 176 131 125 109 149 127 167 131 210 128 329 133 308 137 178 225 110 217 155 291...

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 95% 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 82 102 121 130 117 152 144 111 269 173 184 135 127 107 154 120 161 ...

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 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. LOADING... 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. Construct a 90% confidence interval...

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(15) Consider a sample of nine wait times measured in seconds at a drive through coffee...

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Consider a sample of nine wait times measured in seconds at a drive through coffee shop....

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

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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...

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...

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