b) A traffic engineer conducted a study on Malaysian drivers' speed limit violati He placed a 50km/h speed limit and tracked the speed of 100 randomly selected vehicles, discovering that 40 of them exceeded the speed limit. The speed limit was adjusted to 70km/h, and he monitored the speeds of 100 randomly selected vehicles, discovering that 80 of them do not exceeded the speed limit. i. Calculate a 98% confidence interval for the percentage of vehicles violating the speed limit after the speed limit was raised. ii. Is there any significant difference in the proportions of vehicles violating the speed limit, before and after the speed limit was raised at 0.2% level of significance?
b) A traffic engineer conducted a study on Malaysian drivers' speed limit violati He placed a 50km/h speed limit and tracked the speed of 100 randomly selected vehicles, discovering that 40 of them exceeded the speed limit. The speed limit was adjusted to 70km/h, and he monitored the speeds of 100 randomly selected vehicles, discovering that 80 of them do not exceeded the speed limit. i. Calculate a 98% confidence interval for the percentage of vehicles violating the speed limit after the speed limit was raised. ii. Is there any significant difference in the proportions of vehicles violating the speed limit, before and after the speed limit was raised at 0.2% level of significance?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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solve by using the statistical table please it is easier https://drive.google.com/file/d/1vf7kR2ro7n4KniyZvaPFdikJoWTXzBDb/view?usp=share_link
Transcribed Image Text:b) A traffic engineer conducted a study on Malaysian drivers' speed limit violations
He placed a 50km/h speed limit and tracked the speed of 100 randomly selected
vehicles, discovering that 40 of them exceeded the speed limit. The speed limit
was adjusted to 70km/h, and he monitored the speeds of 100 randomly selected
vehicles, discovering that 80 of them do not exceeded the speed limit.
i. Calculate a 98% confidence interval for the percentage of vehicles violating
the speed limit after the speed limit was raised.
ii. Is there any significant difference in the proportions of vehicles violating
the speed limit, before and after the speed limit was raised at 0.2% level of
significance?
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