We sample because we want to get an overview of the population. It's usually impractical to study the entire population.
For example, say you want to know what percent of people who go to a certain grocery store have a dog. It wouldn't make sense to sample every single person who goes to that grocery store; there's just too many people. But if you took a sample of say, 100 people, and asked them if they had a dog, you could get a rough estimate of all the people.
As the mean is 90 then, the sum of the quantities are..
90×4 = 360
the scores you have are 86, 85, 96
so the answer is.
85+86+96= 262
360-262= 98
the fourth score is 98.
The answer is 8 in, 5 in, 5 in. I hope this helps
Area of half circle is (pi)r^2/2
d=3 r=d/2
r=3/2 or 1.5
(pi)×1.5^2/2
7.065/2= 3.5325ft^2
Answer: The required equation is ![\dfrac{1}{3}x+\dfrac{1}{2}x+2x=34.](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B3%7Dx%2B%5Cdfrac%7B1%7D%7B2%7Dx%2B2x%3D34.)
Step-by-step explanation: We are given to write the following statement as an equation :
"The sum of one-third of a number, one-half of a number and twice the number is thirty-four".
Let the number be represented by x.
Then, one-third of the number is
one-half of the number is
and twice the number is ![2x.](https://tex.z-dn.net/?f=2x.)
Therefore, as an equation, the given statement is written as:
![\dfrac{1}{3}x+\dfrac{1}{2}x+2x=34.](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B3%7Dx%2B%5Cdfrac%7B1%7D%7B2%7Dx%2B2x%3D34.)
Thus, the required equation is ![\dfrac{1}{3}x+\dfrac{1}{2}x+2x=34.](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B3%7Dx%2B%5Cdfrac%7B1%7D%7B2%7Dx%2B2x%3D34.)