Question 215795
One poll reported that the approval rating of the job performance of the President of the United States was 63%. The poll was said to be accurate to within 3.8%. What is the range of actual approval ratings?
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|0.63-x|<= 0.038
-0.038 <= 0.63-x <= 0.038
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-0.63-0.038 <= -x <= 0.038+0.63
-0.768 <= -x <= 0.768

-0.768 <= x <= 0.768
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Cheers,
Stan H>