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RoseWind [281]
3 years ago
11

A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. The researcher accepts

the first five people who respond to the advertisement. Which of the following statements is true about the sample?
It is not a valid sample because it is only a short study.

It is a valid sample because money was offered to participants.

It is a valid sample because the first five people were selected to participate.

It is not a valid sample because it is not a random sample of the population.
Mathematics
2 answers:
Kamila [148]3 years ago
8 0

Answer:

It's D). It is not a valid sample because it is not a random sample of the population.

Step-by-step explanation:

I took the test and got it right.

Alona [7]3 years ago
3 0

Answer:

The answer is "It is not a valid sample because it is not a random sample of the population".

Step-by-step explanation:

I had this test and that was my answer, and it was correct.

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<img src="https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B5%7D%20x%2B%5Cfrac%7B1%7D%7B2%7D%20%3D%5Cfrac%7B3%7D%7B4%7D" id="TexFormula1"
kotegsom [21]

Answer:

x = \frac{5}{8}

Step-by-step explanation:

Solve for  x  by simplifying both sides of the equation, then isolating the variable.

6 0
2 years ago
Mr.Montgomery's class, there are 8 boys and 12 girls.If Mr.Montgomery selects 1 student from his class at random, what is the pr
Gnoma [55]
Probability=number of specific outcomes / total possible outcomes

P(g)=12/(12+8)

P(g)=12/20

P(g)=3/5
7 0
2 years ago
The population of a colony of bacteria can be modeled by the function P(t) = 19,300(5)^t, where t is the elapsed time
allsm [11]
Answer: root t(5)/19300

Explanation:

P(t) = 19300(5)^t
P-1(t) = root t(5)/19300


4 0
3 years ago
Read 2 more answers
Help please explain in detail
yaroslaw [1]

Answer:

1. (n + 3)(5n + 8)

2. (x - 4)(7x - 4)

3. (k + 8)(7k + 1)

Step-by-step explanation:

1. We have to factorize 5n² + 23n + 24.

Now, 5n² + 23n + 24

= 5n² + 15n + 8n + 24

= 5n (n + 3) + 8 (n + 3)

=(n + 3)(5n + 8) (Answer)

2. We have to factorize 7x² - 32x + 16

Now,  7x² - 32x + 16

= 7x² - 28x - 4x + 16

= 7x (x - 4) - 4 (x - 4)

= (x - 4)(7x - 4) (Answer)

3. We have to factorize 7k² + 57k + 8

Now, 7k² + 57k + 8

= 7k² + 56k + k + 8

= 7k (k + 8) + 1 (k + 8)

= (k + 8)(7k + 1) (Answer)

4 0
3 years ago
What to the tenth power can get you 300
OLEGan [10]

Answer:

1.7689 (rounded to 4 decimal places)

Step-by-step explanation:

Let the number we are seeking be "x", thus we can write the equation as:

x^{10}=300

Since we have raised "x" to the "10th power", to get "x" back again, we need to take 10th root. Same goes for right side, we take 10th root of 300. We will get our answer. The process shown below:

x^{10}=300\\\sqrt[10]{x^{10}} =\sqrt[10]{300} \\x=\sqrt[10]{300} \\x=1.7689

hence, 1.7689 raised to 10th power will give us 300

5 0
3 years ago
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