UTIEWUPK 6.3 Score: 0 of 1 pt 6.3.25-T 170f 19 (5 complete) HW Score: 21.05%, 4

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UTIEWUPK 6.3 Score: 0 of 1 pt 6.3.25-T 170f 19 (5 complete) HW Score: 21.05%, 4 of 19 right shows the results of a survey in which 400 adults from the East, 400 adults from the South, 400 adults from the Adulits who say that trafic cangestion a a serious prodem Midwest, and 400 adults from the West were asked if traffic congestion is a serious problem. C a Construct a 99% confidence interval The or the proportion of adults from the East who say traffic congestion is a serious problem 99% confidence interval for the proportion of adults from the East who say traffic congestion is a serious problem is 0.308.0432 (Round to three decimal places as needed.) b onstruct a 99% confidence interval for he proportion o adults rom the South who say affic congestion is a sen s oblem. I it possible that the The 99% conf dence interval or the proportion o adults om the South who say traffic congestion is a serious problem s Round to three decimal places as needed.) two pro tons are ecan Exp r e ing Clear All Enter your answer in the edit fields and then click Check Answer part omaining

Explanation / Answer

a) for p=0.37

std error =(p(1-p)/n)1/2 =0.0241

for 99% CI ; z =2.5758

hence 99% confidence interval =sample proportion -/+ z*std error =0.308 ; 0.432

b)for south

p=0.32

std error =(p(1-p)/n)1/2 =0.0233

for 99% CI ; z =2.5758

hence 99% confidence interval =sample proportion -/+ z*std error =0.260 ; 0.380

please revert for any other subpart

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