1) What is the difference between random sampling andrandom assignment?

Random sampling and random assginment are basically the samething.

Random assignment applies to how the observational units arechosen; random sampling applies to which treatment group theobservational unit receives

Random sampling applies to how the observational units arechosen; random assignment applies to which treatment group theobservational unit receives

b) What type of conclusions can be drawn from random assignmentand random sampling?

Random sampling and random assignment both allow forgeneralizing to the population

Random sampling allows for generalizing to the population,random assignment allows for determining cause-and-effect

Random assignment allows for generalizing to the population,random sampling allows for determining cause-and-effect