Question

In a survey of 1622 adults in a city, 50% said that they rate the city as a good place to raise children. The margin of error is ±2.5%.

a. Give an interval that is likely to contain the exact percent of adults in the city who rate the city as a good place to raise children.

b. The adult population of the city is 150,000. Estimate the number of adults in the city who rate the city as a good place to raise children.

(4 points)
a. It is likely that the exact percent of adults in the city who rate the city as a good place to raise children is between
% and
%.

b. It is likely that the number of adults in the city who rate the city as a good place toraise children is between
and

Answer 1

a. 47.5% to 52.5%.

b. 0.475(150,000) = 71,250 to 0.525(150,000) = 78,750 adults.