The closer we need an estimate to be to the true population, the ____________________ the sample ...

The closer we need an estimate to be to the true population, the ____________________ the sample that will be
  required, all else equal.
 Fill in the blank(s) with correct word

Question 2

The ____ classes are most likely to borrow from other classes because this may be seen as a sign of upward mobility.
 a. working
  b. upper
  c. lower middle
  d. middle
  e. majority of

Question 3

A(n) ____________________ sample is a nonprobability sample chosen so that the proportion of sample
  elements with certain characteristics is about the same as the proportion of the elements with the characteristics of
  the target population.
 Fill in the blank(s) with correct word

Question 4

Bob and Jane both earn good salaries in their blue-collar jobs. Together they earn a comfortable six-figure salary which allows them to buy many of the latest toys and equipment that their friends must do without. In consumer behavior, they would be classified as the ____ in their social class.
 a. overwhelmed
  b. underwhelmed
  c. overprivileged
  d. exemplars
  e. prototypes