On 5/17/2020, a random sample of 1007 U.S. households finds thatTrump has a 49% approval rating.
a) Use the 2SD method to find a 95% confidence interval estimateof the proportion of all U.S. households that approve of Trump on5/17/2020. Show all work/steps to get the 2SD estimate. Round themargin of error to three decimal places. Work and Answer:
b) Use your answer from part (a) to fill in the red spaces belowin order to write the results of the poll in these twonotations:
According to the poll, on 5/17/2020, Trump has an approvalrating of 49% ± _________%
According to the poll, on 5/17/2020, Trump’s approval rating wasbetween ______% and ______%
c) If we were to use this same sample information to find a 90%confidence interval estimate instead of a 95% confidence intervalestimate, then would our new 90% confidence interval be wider, orwould it be narrower than the 95% estimate? Work and Answer:
