Question

a survey of 100 students at a school finds that 15% of the students walk or bike to school. the margin of error is ±3.6%. select all the likely percentages of students who walk or bike to school. 7.8% 10.2% 11.5% 17.1% 20.8%

Explanation:

Step1: Calculate the lower bound

The lower bound of the percentage is \(15\% - 3.6\%=11.4\%\)

Step2: Calculate the upper bound

The upper bound of the percentage is \(15\% + 3.6\% = 18.6\%\)

Answer:

17.1%, 11.5%, 10.2%, 7.8%