1. Select every 9th candy bar from a production line to check its weight = Systematic Sampling 2. Group t-shirts by colors and select t-shirts at random from within each group in proportion to the number of t-shirts that make up that group. = Stratified Sampling 3. Use random number tables to select 15 students from a class = Random Sampling

4. Select 8 white cars, 5 blue and 3 red cars = systematic sampling

Can you please provide some feedback to see if I was correct.