Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
1.
|
 A
survey estimated that the average cost of textbooks for a semester of college is $320 with a margin
of error of ± 8%. What is the range of the possible average cost of text
books?
| | | |
a. | $312.00 to $328.00 | c. | $291.20 to $348.80 | b. | $319.92 to $320.08 | d. | $294.40 to
$345.60 |
|
|
|
2.
|
 The
Tomota car company suggests that their hybrid car called the Premium gets an average of 54 ± 4
miles per gallon (mpg) of gasoline on the highway.
Which of the following is most directly
suggested by the company’s claim?
| | | |
a. | The car has an average mpg between 50 and 58 on the highway. | b. | The car is
guaranteed to get at least 50 mpg on the highway. | c. | The car will never get more than 58 mpg on the
highway. | d. | The margin of error is 54 mpg. |
|
|
|
3.
|
 The
average credit card debit for an American is between $11,000 and $17,000
How could this be
written using a margin of error? | | | |
a. | $11,000 with a margin of error of ± 34.2%
| b. | $14,000 with a
margin of error of ± 30% | c. | $14,000 with a margin of error of ±
21.4%
| d. | $11,000 with a margin of error of ± 35.3% |
|
|
|
4.
|
 The
average hourly pay rate for a job as a cashier at a retail store in Georgia is between $11 and
$14.
How could this be written using a margin of error?
| | | |
a. | $11 with a margin of error of ± $1.50 | b. | $11 with a margin of
error of ± $3 | c. | $12.50 with a margin of error of ±
$3 | d. | $12.50 with a margin of error of ± $1.50 |
|