A pediatrician's office wants to know the average weight of all patients to determine if a new type of examination table should be bought. The office uses the records of each patient to find the average weight of all patients. This is an example of what type of statistical investigation?

If you draw a card with a value of three or less from a standard deck of cards, i will pay you $43. if not, you pay me $11. (aces are considered the highest card in the deck.) step 1 of 2 : find the expected value of the proposition. round your answer to two decimal places. losses must be expressed as negative values.