Reference no: EM132148015
The table shows the results of a survey in which 400 adults from the? East, 400 adults from the? South, 400 adults from the? Midwest, and 400 adults from the West were asked if traffic congestion is a serious problem. Complete parts? (a) and? (b). Adults who say that traffic congestion is a serious problem east 34% South 31% Midwest 27% west 55%
?(a) Construct a? 99% confidence interval for the proportion of adults from the South who say traffic congestion is a serious problem. The? 99% confidence interval for the proportion of adults from the South who say traffic congestion is a serious problem is ( ? , ? ) .?(Round to three decimal places as? needed.)
?(b) Construct a? 99% confidence interval for the proportion of adults from the East who say traffic congestion is a serious problem. Is it possible that these two proportions are? equal? Explain your reasoning.
The? 99% confidence interval for the proportion of adults from the East who say traffic congestion is a serious problem is ( ? , ? ) .?(Round to three decimal places as? needed.) Is it possible that these two proportions are? equal?
Yes because the? 99% confidence interval for the South overlaps with the? 99% confidence interval for the East or
No because the? 99% confidence interval for the South does not overlap with the? 99% confidence interval for the east.
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