H0: µ1 - µ2 = 1
H1: µ1 - µ2 < 1
zo = -1.698
P-value = 0.045
1.0000 | hypothesized value |
7.1417 | mean Before |
6.3167 | mean After |
0.8250 | mean difference (Before - After) |
0.3571 | std. dev. |
0.1031 | std. error |
12 | n |
-1.698 | z |
.045 | p-value (one-tailed, lower) |
0.655 | confidence interval 90.% lower |
0.995 | confidence interval 90.% upper |
0.1695 | margin of error |
0.655 <= µ1 - µ2 <= 0.995
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The time delay is measured for a city street. Variability in this value is estimated the...
The time delay is measured for a city street. Variability in this value is estimated as σ=0.3 (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Reserve Problems Chapter 10 Section 1 Problem 3 The time delay is measured for a city street. Variability in this value is estimated as a = 0.3...
The time delay is measured for a city street. Variability in this value is estimated as o = 0.3 (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Before 7.3 7.0 7.1 7.3 7.5 7.0 6.6 6.7 7.4 7.2 7.5 7.1 After 6.2 6.5 6.2 6.2 6.9 5.8 5.6 6.0 6.3 6.0 7.3...
The time delay is measured for a city street. Variability in this value is estimated as o = 0.3 (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Before 7.5 7.1 7.1 7.1 7.7 7.2 6.6 6.6 7.4 7.2 7.7 7.1 After 6.5 6.6 6.3 6.1 6.9 5.8 5.8 5.7 6.4 6.0 7.5...
The time delay is measured for a city street. Variability in this value is estimated as o= 0.3 (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Before 7.5 7.1 7.1 7.1 7.5 7.4 6.96.4 7.2 7.2 7.6 7.1 After 6.5 6.6 6.3 6.2 6.8 6.2 6.0 5.7 6.2 5.8 7.4 6.7 Assume...
Reserve Problems Chapter 10 Section 1 Problem 3 The time delay is measured for a city street. Variability in this value is estimated as (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Before 7.2 7.1 7.1 7.0 7.4 7.1 6.8 6.5 7.1 7.2 7.5 7.1 After 6.2 6.6 6.2 6.1 6.8 5.8...
Reserve Problems Chapter 10 Section 1 Problem 3 The time delay is measured for a city street. Variability in this value is estimated as 6 = 0.3 (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Before 7.2 7.1 7.1 7.3 7.3 7.07 6.4 7.2 7.2 7.5 7.1 After 6.1 6.6 6.4 6.4...
Reserve Problems Chapter 10 Section 1 Problem 3 The time delay is measured for a city street. Variability in this value is estimated as o = 0.3 (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Before 7.5 7.1 7.1 7.2 7.517.2 6.8 6.6 7.1 7.3 7.4 7.2 After 6.5 6.7 6.4 6.2...
Reserve Problems Chapter 10 Section 1 Problem 3 The time delay is measured for a city street. Variability in this value is estimated as o = 0.3 (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Before 7.4 7.1 7.1 7.4 7.4 7.0 6.9 6.5 7.3 7.2 7.4 7.2 After 6.3 6.7 6.2...
Reserve Problems Chapter 10 Section 1 Problem 3 The time delay is measured for a city street. Variability in this value is estimated as o = 0.3 (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Before 7.3 7.0 7.1 7.4 7.37.26.76.8 7.3 7.3 7.5 7.2 After 6.2 6.6 6.4 6.4 6.7 5.8...
1) 2) The time delay is measured for a city street. Variability in this value is estimated as = 0.3 (for time in minutes) by experience. Traffic signs and lights were recently altered to facilitate traffic and reduce delays. Delay times in minutes for a random car sample before and after the rearrangement are shown below. Before 7.5 7.0 7.1 7.3 7.7 7.0 6.8 6.6 7.0 7.3 7.5 7.2 After 6.5 6.6 5.3 6.4 7.0 5.7 6.0 5.9 5.8 6.1...