The Provincial Transportation Department Is Studying Traffic Patterns on One

question 145

Multiple Choice

The provincial transportation department is studying traffic patterns on one of the busiest highways in the province.As part of the study,the department needs to estimate the average number of vehicles that pass an intersection each day to within 300 cars with 99% confidence.If the population standard deviation is 1,010 cars,how many days do they need to sample?

• A)109
• B)76
• C)75
• D)62
• E)9

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