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The table shows the results of a survey in which separate samples of 400 adults each from the East, South, Midwest, and West were asked

The table shows the results of a survey in which separate samples of 400 adults each from the East, South, Midwest, and West were asked if traffic congestion is a serious problem in their community. Complete parts (a) and (b).

East 37%

South 33%

Midwest 26%

West 53%

Construct a 95% confidence interval for the proportion of adults from the East

who say traffic congestion is a serious problem

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