Question

Points!! Help PLEASE!!!!!!!!!!!!!!!!! I've been stumped forever!:( Point estimate? Poll's margin of error? Fill in the blanks:

The results of a poll show that the percent of people in a town who oppose the construction of a new bus station is in the interval (0.35, 0.43) .

What is the point estimate for the percent of people in the city who oppose the bus station?

What is the poll's margin of error?

The point estimate for the percent is
__ .

The poll's margin of error is
__ %.

Answer 1

The point estimate is the mid-point of the interval:

`(.35+.43)/(2) = (.78)/(2) = 0.39`

The margin of error is the difference between the endpoints of the interval and the mid-point.

`0.43 - 0.39 = 0.04 = 4\%`