A weight-loss clinic advertised that last month its patients, on average, lost 8 lb. 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 some of their patients lost less than 13 lb. This month at least one of their patients will lose at least 8 lb. Last month all of their patients lost at least 8 lb. Last month some of their patients lost exactly 8 lb. Last month, the number of their clients who lost 8 lb or less was equal to the number of their clients who lost 8 lb or more. None of the above statements are true.
