An elementary school has the following numbers of students in grades K to 4: grade K:20; grade 1: 32; grade 2: 40; grade
Posted: Wed May 11, 2022 10:24 am
An elementary school has the following numbers of students in grades K to 4: grade K:20; grade 1: 32; grade 2: 40; grade 3: 24; and grade 4: 28. If a stratified sample of 72 children is to be chosen, how many children will be chosen from each grade? from grade K from grade 1 from grade 2 from grade 3 from grade 4