In this sampling method we believe there are significant differences between groups comprising the population. here we assign the population into groups and then try to replicate those percentages present in the population in our sample. as a result we randomly select people out of each group to try and get a representative sample from each of the groups of interest. which sampling method is this?

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

whatare you sayig

step-by-step explanation:

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!

the equation is not included but the answer is (1.50, 2.00, 2.75)

step-by-step explanation: