A weight-loss clinic advertised that last month its patients, on average, lost

7lb

. 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 month, the number of their clients who lost 7lb or more was equal to the number of their clients who lost 7lb or less.

Last month at least one of their patients lost exactly

7lb. Last month some of their patients lost less than

10lb.

Two months ago some of their patients lost at least

7lb.

Last month all of their patients lost

7lb

or more.