Im confused pls me answer the next problem! : ( 1. tony decides to use observation. he visits 10 students and observes them doing schoolwork at home for 30 min. if a student looks at social media during that time, he notes it. (a) provide an advantage of using observation. (b) provide a disadvantage of using observation. (c) what are the sample and population for tony’s research? (d) suppose 3 of the 10 students looked at social media during the observation. what conclusion could tony make about the percent of high school students who use social media while doing schoolwork?

An advantage of using observation is it gives you more details than assuming or modeling would.

A disadvantage is how long it takes to get your answer.

The sample is the students and the population is 10.

If 3 out of 10 students use social media then 30% of the schools population probably uses social media.

Step-by-step explanation:

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.

answer: idk wbu

step-by-step explanation: umm..