a survey of 100 students at a school finds that 15% of the students walk or bike to school. the margin of…

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%

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%

Answer

Explanation:

Step1: Find the lower - bound

Subtract the margin of error from the sample percentage. $15 - 3.6=11.4$.

Step2: Find the upper - bound

Add the margin of error to the sample percentage. $15 + 3.6 = 18.6$.

Answer:

C. 11.5%, D. 17.1%