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The Simple Solution to Traffic A study in 2017 showed that Metro Manila has the 3d worst traffic among its Southeast Asian neighbors. Government authorities are receiving several complaints from commuters due to the worst transport connectivity and endless queueing and congestions among rail transit stations. In this regard, aligning projects for the improvement of the traffic system as part of the "Metro Manila Dream (MMD) Plan" was set into motion. However, media reports daimed that many commuters did not feel any improvement in the current traffic situation in the Metro, especially in Epifanio Delos Santos Avenue (EDSA). The chair of the Metro Manila Development Authority (MMDA) is keen to verify if the road traffic conditions are fairly improving in EDSA despite various media reports. In the past, the recorded vehicular traffic speed in EDSA shows about 15 kph, on the average. To do this, the MMDA deployed speed measuring radars in which the traffic speeds of 200 randomly sampled vehicles passing via EDSA during rush hour were each measured. In case you want to replicate the given results from R Commander, the collected data can be accessed in the file Problem Set 4.1 Speed.xlsx 1. Given R Commander Outputs #1 and #2, provide a point estimate (with a measure of precision) of the true average vehicular traffic speed of vehicles passing via EDSA. Also, if possible, construct a 95% confidence interval estimate for the parameter of interest. Using the confidence interval, is there sufficient evidence to say that the average vehicular traffic speed in EDSA differed from the past record of 15kph? R COMMANDER OUTPUT #1 R COMMANDER OUTPUT #2 se (mean) Shapiro-Wilk normality test data: EDSA_speed W - 0.98823, p-value - 0.09771 mean sd 24.01429 5.372487 0.3798922 200 95 percent confidence interval: 23.26516 24.76342

The Simple Solution to Traffic A study in 2017 showed that Metro Manila has the 3d worst traffic among its Southeast Asian neighbors. Government authorities are receiving several complaints from commuters due to the worst transport connectivity and endless queueing and congestions among rail transit stations. In this regard, aligning projects for the improvement of the traffic system as part of the "Metro Manila Dream (MMD) Plan" was set into motion. However, media reports daimed that many commuters did not feel any improvement in the current traffic situation in the Metro, especially in Epifanio Delos Santos Avenue (EDSA). The chair of the Metro Manila Development Authority (MMDA) is keen to verify if the road traffic conditions are fairly improving in EDSA despite various media reports. In the past, the recorded vehicular traffic speed in EDSA shows about 15 kph, on the average. To do this, the MMDA deployed speed measuring radars in which the traffic speeds of 200 randomly sampled vehicles passing via EDSA during rush hour were each measured. In case you want to replicate the given results from R Commander, the collected data can be accessed in the file Problem Set 4.1 Speed.xlsx 1. Given R Commander Outputs #1 and #2, provide a point estimate (with a measure of precision) of the true average vehicular traffic speed of vehicles passing via EDSA. Also, if possible, construct a 95% confidence interval estimate for the parameter of interest. Using the confidence interval, is there sufficient evidence to say that the average vehicular traffic speed in EDSA differed from the past record of 15kph? R COMMANDER OUTPUT #1 R COMMANDER OUTPUT #2 se (mean) Shapiro-Wilk normality test data: EDSA_speed W - 0.98823, p-value - 0.09771 mean sd 24.01429 5.372487 0.3798922 200 95 percent confidence interval: 23.26516 24.76342

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 28PPS
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The Simple Solution to Traffic A study in 2017 showed that Metro Manila has the 3rd worst traffic among its Southeast Asian neighbors. Government authorities are receiving several complaints from commuters due to the worst transport connectivity and endless queueing and congestions among rail transit stations. In this regard, aligning projects for the improvement of the traffic system as part of the "Metro Manila Dream (MMD) Plan" was set into motion. However, media reports claimed that many commuters did not feel any improvement in the current traffic situation in the Metro, especially in Epifanio Delos Santos Avenue (EDSA). The chair of the Metro Manila Development Authority (MMDA) is keen to verify if the road traffic conditions are fairly improving in EDSA despite various media reports. In the past, the recorded vehicular traffic speed in EDSA shows about 15 kph, on the average. To do this, the MMDA deployed speed measuring radars in which the traffic speeds of 200 randomly sampled vehicles passing via EDSA during rush hour were each measured. In case you want to replicate the given results from RCommander, the collected data can be accessed in the file Problem Set 4.1 Speed.xlsx Given R Commander Outputs #1 and #2, provide point estimate (with a measure of precision) of the 1. true average vehicular traffic speed of vehicles passing via EDSA. Also, if possible, construct a 95% confidence interval estimate for the parameter of interest. Using the confidence interval, is there sufficient evidence to say that the average vehicular traffic speed in EDSA differed from the past record of 15kph? R COMMANDER OUTPUT #1 R COMMANDER OUTPUT #2 se (mean) Shapiro-Wilk normality test data: EDSA speed W - 0.98823, p-value = 0.09771 n 24.01429 5.372487 0.3798922 200 mean sd 95 percent confidence interval: 23.26516 24.76342
Transcribed Image Text:The Simple Solution to Traffic A study in 2017 showed that Metro Manila has the 3rd worst traffic among its Southeast Asian neighbors. Government authorities are receiving several complaints from commuters due to the worst transport connectivity and endless queueing and congestions among rail transit stations. In this regard, aligning projects for the improvement of the traffic system as part of the "Metro Manila Dream (MMD) Plan" was set into motion. However, media reports claimed that many commuters did not feel any improvement in the current traffic situation in the Metro, especially in Epifanio Delos Santos Avenue (EDSA). The chair of the Metro Manila Development Authority (MMDA) is keen to verify if the road traffic conditions are fairly improving in EDSA despite various media reports. In the past, the recorded vehicular traffic speed in EDSA shows about 15 kph, on the average. To do this, the MMDA deployed speed measuring radars in which the traffic speeds of 200 randomly sampled vehicles passing via EDSA during rush hour were each measured. In case you want to replicate the given results from RCommander, the collected data can be accessed in the file Problem Set 4.1 Speed.xlsx Given R Commander Outputs #1 and #2, provide point estimate (with a measure of precision) of the 1. true average vehicular traffic speed of vehicles passing via EDSA. Also, if possible, construct a 95% confidence interval estimate for the parameter of interest. Using the confidence interval, is there sufficient evidence to say that the average vehicular traffic speed in EDSA differed from the past record of 15kph? R COMMANDER OUTPUT #1 R COMMANDER OUTPUT #2 se (mean) Shapiro-Wilk normality test data: EDSA speed W - 0.98823, p-value = 0.09771 n 24.01429 5.372487 0.3798922 200 mean sd 95 percent confidence interval: 23.26516 24.76342
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