Question

A researcher who is interested in the academic performance of students currently enrolled at the local college randomly selects 100 students to include in his study. The average GPA for these students is an example of a(n) _____.

Answer 1

The average GPA for the 100 students is a sample statistic.

To find the width of the rectangular screen, we can use the formula for the area of a rectangle:

length x width = area

We are given that the viewable area is 9,800 square meters, so:

length x width = 9,800

We are also given that the length is 5 meters more than 6 times the width, so:

length = 6w + 5

Substituting this into the area formula:

(6w + 5) x w = 9,800

Expanding and rearranging:

6w^2 + 5w - 9,800 = 0

Using the quadratic formula:

w = (-5 ± sqrt(5^2 - 4(6)(-9800))) / (2(6))

w ≈ 32.9 meters (to two decimal places)

Therefore, the width of the rectangular screen is approximately 32.9 meters.

Explanation: