39000 Assuming that average refers to the mean which of the

$39,000. Assuming that average refers to the mean, which of the following claims must be true based on this information?

Note: More than one statement could be true. If none of the statements is true, mark the appropriate box.

Last year at least one of their clients had a starting salary of exactly $39,000.

Last year, the number of their clients who had a starting salary of

$39,000 or above was equal to the number of their clients who had a starting salary of

$39,000 or below.

Last year at least one of their clients had a starting salary of less than $41,000.

Last year all of their clients had a starting salary of

$39,000 or above.

None of the above statements is true.

Solution

Last year the average salary was $ 39,000

average(mean) means that some have salary higher then $39000 and some have below $ 39000

                                                // Average (Mean) = sum of all starting salaries / total number of people

the number of people having salary higher then $ 39000 can be equal to number of people having salary less then $39000 or the number of people can be different on both sides(higher then $ 39000 and lower then $ 39000)

so the correct option is

Last year, the number of their clients who had a starting salary of $39,000 or above was equal to the number of their clients who had a starting salary of $39,000 or below.