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. nner in seconds at two fast food restaurants. Construct a 95% confidence interval estimate ofat dinner for Restaurant XRestaurant Drive-Through Service TimesService Times (seconds)Restaurant XRestaurant Y8212311915027110012514811817318012115616120913710912512312333231017611615713513322821429014794236237182124951412421481482031721225914420314513813420017311414017414315913117113019120223519435224523624923323630321019918319217287105511751041511781581727814214698123159163128137313149131183151127PrintDoneClear AllMacBook Air

For Restaurant X: The degrees of freedom is, Computation of critical value: The critical value of…

Answered: Refer to the accompanying data set of…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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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.

nner in seconds at two fast food restaurants. Construct a 95% confidence interval estimate of
at dinner for Restaurant X
Restaurant Drive-Through Service Times
Service Times (seconds)
Restaurant X
Restaurant Y
82
123
119
150
271
100
125
148
118
173
180
121
156
161
209
137
109
125
123
123
332
310
176
116
157
135
133
228
214
290
147
94
236
237
182
124
95
141
242
148
148
203
172
122
59
144
203
145
138
134
200
173
114
140
174
143
159
131
171
130
191
202
235
194
352
245
236
249
233
236
303
210
199
183
192
172
87
105
51
175
104
151
178
158
172
78
142
146
98
123
159
163
128
137
313
149
131
183
151
127
Print
Done
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Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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