Question

Please help me solve this.

Answer 1

a) Option b

b) 7524

Explanation:

a) The survey is to estimate the number of adults. Hence only adults should be surveyed and not senior citizens or houseowners. Since all adults cannot be surveyed a sample strictly at random of adults can be surveyed. Since option b satisfies this, we select b as answer.

b) Given that in the survey of 25 adults 11 voted in the last election.

Hence out of 17100 adults, no of adults who voted in the last election would be

`(11)/(25) *17100 = 7524`

So out of 17100, 7524 adults would have voted in the last election.