Match each word to its definition,
1. sample not representative of the entire population
biased sample
convenience sample
2. sample where every member of the population has an equal chance of being selected
3. sample members are selected through the use of a rule
unbiased sample
4. sample where members volunteer to take part
self-selected sample
5. sample where representatives are easily accessible
stratified sample
6, members are selected from the different subgroups within a population
systematic sample

Lian is deciding which of two gyms to join. each gym charges a monthly rate plus a one-time membership fee. lian correctly wrote and solved a system of linear equations by substitution to compare the costs of the memberships. in her work, she substituted an expression for one variable and solved for the other. this resulted in the equation 75 = 75. what can lian conclude? one gym charges $75 per month. each gym charges $75 per month both gyms charge the same monthly rate and the same membership fee. both gyms charge the same monthly rate, but not the same membership fee.