solve by using mathematical equations and formulas only b) A traffic engineer conducted a study on Malaysian drivers' speed limit violationsHe placed a 50km/h speed limit and tracked the speed of 100 randomly selectedvehicles, discovering that 40 of them exceeded the speed limit. The speed limitwas adjusted to 70km/h, and he monitored the speeds of 100 randomly selectedvehicles, discovering that 80 of them do not exceeded the speed limit.i. Calculate a 98% confidence interval for the percentage of vehicles violatingthe speed limit after the speed limit was raised.ii. Is there any significant difference in the proportions of vehicles violatingthe speed limit, before and after the speed limit was raised at 0.2% level ofsignificance?

b) A traffic engineer conducted a study on He placed a 50km/h speed limit and tracked the speed of vehicles, discovering that 40 of them exceeded the speed limit. The spee was adjusted to 70km/h, and he monitored the speeds of 100 randomly selectes vehicles, discovering that 80 of them do not exceeded the speed limit. i. Calculate a 98% confidence interval for the percentage of vehicles violatin 31 it after the speed limit was raised.

b) A traffic engineer conducted a study on He placed a 50km/h speed limit and tracked the speed of vehicles, discovering that 40 of them exceeded the speed limit. The spee was adjusted to 70km/h, and he monitored the speeds of 100 randomly selectes vehicles, discovering that 80 of them do not exceeded the speed limit. i. Calculate a 98% confidence interval for the percentage of vehicles violatin 31 it after the speed limit was raised.

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 6E: List the sample space of each experiment. Tossing three coins

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