Question

If a sample of 77 students were taken from a population of 950 students, o^2 could refer to the variance of how many of the students height

Answer 1

Answer with explanation:

Sample of Students Chosen =950----N

Total Number of students = 77

Probability of choosing a student from 77 students, that is Probability of Success

`=(77)/(950)------P`

Probability of Failure ,that is choosing a student from , 950-77=873, students

`=(873)/(950)-----Q`

`\text{Variance}(\sigma)^2=√(NPQ)\\\\=\sqrt{950 * (77)/(950)* (873)/(950)}\\\\=\sqrt{873 * (77)/(950)}\\\\=70.7589`

Approximately ,70 or 71 Students refer to the variance of of the students height.

Answer 2

variance of 950 students