Two new drugs are to be tested using a group of 60 laboratory mice, each tagged with a number for identification purposes. drug a is to be given to 22 mice, drug b is to be given to another 22 mice, and the remaining 16 mice are to be used as controls.
how many ways can the assignment of treatments to mice be made? (a single assignment involves specifying the treatment for each mouse; whether drug a, drug b or no drug.)

Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.