vehicular speeds

Generate 99% confidence intervals for mean vehicular after-speed data assuming the population variance is unknown. Explain each step and interpret the results.

ASSIGNMENT Suppose our goal is to quantify the impact of the repeal of the national maximum speed limit on average speeds on U.S. roads. Representative speed data are collected for particular time periods before and after the repeal. The spreadsheet “hw1_speed_data.csv” contains vehicular speed data before and after the repeal of a speed limit law. […]

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