Question

1 2 3 4 5 6 7 8 9 10

TIME REMAINING
52:00
Principal Phillipi used a random sample of 20 student records to determine how far, in miles, students live from the school. The results are shown below.

3, 4, 5, 3, 4,
5, 6, 5, 4, 3,
2, 3, 4, 5, 6,
4, 8, 4, 3, 2

What is the mean distance that his students live from the school, rounded to the nearest tenth?

Answer 1

Answer: The mean distance that his students live from the school= 4.2 miles

Explanation:

Given: Principal Phillipi used a random sample of 20 student records to determine how far, in miles, students live from the school.

We know that Mean=
`\frac{\text{Sum of all observations}}{\text{Number of observations}}`

The mean distance that his students live from the school

`=(3+4+5+3+4+5+6+5+4+3+2+3+4+5+6+4+8+4+3+2)/(20)`

`=(83)/(20)=4.15\approx4.2`

Therefore, The mean distance that his students live from the school= 4.2 miles