A job placement agency advertised that last year its clients

A job placement agency advertised that last year its clients, on average, had a starting salary of L $39,500. 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 $39,500. This year some of their clients will have a starting salary of at least $39,500. Last year at least one of their clients had a starting salary of more than $42,000. Last year more than half of their clients had a starting salary of at least $39,500. Last year some of their clients had a starting salary of at least $39,500. None of the above statements is true.

Solution

Mean is average of the all the values. Generally some data values are less than mean and some greater than. So 1 and 4 are true. If 4 is true than 1 will automatically true. It is possible that only 1 is true.