Chapter 4.5, Problem 32E

To determine

(a)

To find:

The size of sample so that the margin of error is at most $3\text{\%}$.

To determine

(b)

To find:

The size of sample so that the margin of error is at most $2\text{\%}$.

To determine

(c)

To find:

The size of sample so that the margin of error is at most $1\text{\%}$.

To determine

(d)

To compare:

The answer of part (a) and part (c).