Respuesta :
The second sampling method 6th to 8th grade is the most representative
Answer with explanation:
The Information about the basketball players at Rafael’s middle school is as follows:
They are selling T shirts.
To determine the average number of shirts that have been sold.
1. He surveyed five members of the 7th-grade boys basketball team.
2. He surveyed every third basketball player on the boys and girls 6th- through 8th-grade basketball teams.
Surveying five members of 7th grade boys basketball team would not produce better result , because the sample size is very small.
To get the better result , we need large sample size , that is more students are included.
So, surveying every third basket ball player on the boys and girls 6th through 8th grade has large sample size than surveying only 5 members , so it will bring out better result.
Number of players in either Man or Woman team = 12
So, total number of players from 6th to 8th class= 12*3+12*3=36+36=72
Every third player is surveyed.
Number of players surveyed [tex]=\frac{72}{3}\\\\=24[/tex]
Surveying every third basketball player on the boys and girls 6th- through 8th-grade basketball teams is a better sampling technique to determine number of T shirt sold at Rafael middle school.
