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Anettt [7]
2 years ago
8

HELP PLEASE WILL GIVE BRAINLIEST TO WHOM CAN ANSWER CORRECTLY A lawn-care specialist chooses a random sample from the yard and d

etermines the number of weeds in the sample. The results of the sample are shown in the table below.
look at attachment
Which explains whether or not this is a representative sample?

Yes, this is a representative sample because each type of weed is represented in the sample.

Yes, this is a representative sample because each type of weed is represented approximately the same number of times in the sample.

No, this is not a representative sample because each type of weed should be represented in proportion to the number of weeds actually present in the yard.

No, this is not a representative sample because each type of weed should be represented exactly the same number of times in the sample.

Mathematics
2 answers:
Marianna [84]2 years ago
4 0

Answer:  No, this is not a representative sample because each type of weed should be represented in proportion to the number of weeds actually present in the yard.

Step-by-step explanation:

A representative sample has to be in proportion, and the diagram shows that the greater part is not represented in proportion. Because it is not represented in proportion, it is not a representative sample.

Answer: C

Shkiper50 [21]2 years ago
3 0

Answer:

Letter C because the sample size is not in proportion to the rest of the weeds in the grass.

Step-by-step explanation:

Also, I use Ed_genuity too did u rlly need to blur out time left lol

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Find a right triangle that has legs with your irrational Lengths and a hypotenuse with a rational Length
cluponka [151]

gg easy


the legs of a triangle are related as a^2+b^2=c^2 wehre a, b, and c are the legs and the hypotonuse of a triangle respectively


let's find some stuff

one easy way is to find a rational value for c find values of a and b

lets pick c=5

a^2+b^2=5^2

a^2+b^2=25

now split up 25 into 2 things that don't have rational square roots

if we say a^2=19 and b^2=6 then we get

a=\sqrt{19} and b=\sqrt{6} (which are both irrational)

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2 years ago
Vanessa uses the expressions (3x2 + 5x + 10) and (x2 – 3x – 1) to represent the length and width of her patio. Which expression
VMariaS [17]
To find the answer to this, you have multiply both expressions by each other. To do this, you have to multiply each term in the first expression by each term in the second expressions. This yields the following: 3x^4-9x^3-3x^2+5x^3-15x^2-5x+10x^2-30x-10. Combing like terms and simplifying gives the final expression: 3x^4 - 4x^3 - 8x^2 - 35x - 10
3 0
2 years ago
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Workers at a particular mining site receive an average of 35 days paid vacation, which is lower than the national average. The m
SVETLANKA909090 [29]

Answer:

B

Step-by-step explanation:

The average of paid time off is the sum of the paid time off (T) of each employee divided by the number of employees(n):

av = (∑T)/n

Thus, av is directly proportional to the sum of T and indirectly proportional to n. It means that if T raises, the average raises too. So, the manager must fire the employees who have the least number of days off, so T will increase.

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2 years ago
At UF, there are always a few days between the end of classes and the beginning of final exams. These days are meant as a study
Natalija [7]

Answer:

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Step-by-step explanation:

This is a common statistics practice, when we want to study something from a population, we find a sample of this population.

However, the sample has to be representative

For example:

I want to estimate the proportion of New York state residents who are Buffalo Bills fans. So i ask, lets say, 1000 randomly selected Buffalo residents wheter they are Buffalo Bills fans, and expand this to the entire population of New York State residents. This is not representative of all New York State residents, just Buffalo residents.

In this problem, we have that:

They conduct a phone survey (with local numbers selected at random from the student directory) calling people during "dead week". Will this sample be representative of all UF students?

They only call those students with local numbers.

However, in an university, it is expected that there will be a good percentage of non local students.

So this sample is not representative of all UF students, since those who are not local are not considered.

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2 years ago
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ANEK [815]
<span>He believes that life is full of pain and suffering.</span>
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