Mathematics, 30.10.2021 01:40 serenityharmon1

The National Transportation Safety Board is interested in estimating the mean time (minutes) working adults spend commuting to work on a typical day. A random sample of working adults will be selected from each of three strata: urban, suburban, and rural. Selected individuals will be asked the number of minutes they spend commuting to work on a typical day. Why is stratification used in this situation

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The National Transportation Safety Board is interested in estimating the mean time (minutes) working...