Answer to Question #327040 in Statistics and Probability for ayuda

Question

You want to determine the opinion of students in New York University about the new platform used in learning this pandemic. You wanted to use stratified sampling in getting responses from a sample of 500 students. Given the following data, identify how many samples are there in each grade level.

Grade 7: 1,557

Grade 8: 1, 209

Grade 9: 1,054

Grade 10: 1, 988

Grade 11:1, 456

Grade 12: 1,764

Answer 1

There are 1557+1209+1054+1988+1456+1764=9028 students.

Samples in each grade:

Grade 7: $n=500*\frac{1557}{9028}=86.$

Grade 8: $n=500*\frac{1209}{9028}=67.$

Grade 9: $n=500*\frac{1054}{9028}=58.$

Grade 10: $n=500*\frac{1988}{9028}=110.$

Grade 11: $n=500*\frac{1456}{9028}=81.$

Grade 12: $n=500*\frac{1764}{9028}=98.$