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KatRina [158]
3 years ago
12

A researcher posts a radio advertisement offering $35 in exchange for participation in a short study. The researcher accepts the

first eight people who respond to the advertisement. Which of the following statements is true about the sample? (5 points)
A. It is a valid sample because the first eight people were selected to participate.
B. It is not a valid sample because it is not a random sample of the population.
C. It is a valid sample because money was offered to participants.
D. It is not a valid sample because it is only a short study.
Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
7 0

Answer:

B.

Step-by-step explanation:

Its meh best guess

leonid [27]3 years ago
3 0

Answer:

B.

Step-by-step explanation:

I think it is B

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A soccer field is a rectangle 48 meters wide and 55 meters long. The coach asks players to run from one corner to the corner dia
Sindrei [870]

Answer:

Distance = 73 m

Step-by-step explanation:

Given that,

The length of a rectangle = 48 m

The width of a rectangle = 55 m

We need to find the diagonal distance. We can use the Pythagoras theorem to find it.

d^2=48^2+55^2\\\\d=\sqrt{5329}\\\\d=73\ m

So, the required distance is equal to 73 m.

5 0
3 years ago
In an eye color study, 25 out of 50 people in the sample had brown eyes. in this situation, what does the number .50 represent?
dsp73
The total number of people in this expermiment.
8 0
4 years ago
What is ......<br><br>(23×10)+(23×7)=​
babunello [35]

Answer:

391

Step-by-step explanation:

(23 x 10) + (23 x 7) =

230 + 161 =

391

Hope this helps! Please mark as brainliest.

5 0
4 years ago
Which of the following is not a condition for constructing confidence intervals?
Andrew [12]
You can use google or safari... then click the first link (Type in your question)
4 0
3 years ago
( please help !! )
sergij07 [2.7K]

Answer:

A. Circular base of the bucket

B. Bucket

Step-by-step explanation:

We are given that,

1. The dimensions of the rectangular prism are,

Length = 2 feet, Width = 3 feet and Height = 5 feet.

So, we have,

Area of the rectangular base = Length\times Width

i.e. Area of the rectangular base = 2\times 3

i.e. Area of the rectangular base = 6 feet²

Also, we have,

Volume of the prism = whl

i.e. Volume of the prism = 3\times 5\times 2

i.e. Volume of the prism = 30 feet³

2. The dimensions of the cylinder are given as,

Diameter = 3 feet i.e Radius = \frac{3}{2} = 1.5 feet

Height = 5 feet

Then, we have,

Area of the circular base = \pi r^2

i.e. Area of the circular base = \pi (1.5)^2

i.e. Area of the circular base = 2.25\pi

i.e. Area of the circular base = 7.07 feet²

Also, we have,

Volume of the cylinder = \pi r^{2}h

i.e. Volume of the cylinder = \pi (1.5)^{2}\times 5

i.e. Volume of the cylinder = \pi 2.25\times 5

i.e. Volume of the cylinder = 11.25\pi

i.e. Volume of the cylinder = 35.34 feet³

PART A: Since we have,

Area of the rectangular base = 6 feet² < 7.07 feet² = Area of the circular base

Hence, the circular base of the bucket is larger in area.

PART B: We have,

Volume of the prism = 30 feet³ < 35.34 feet³ = Volume of the cylinder

Hence, the bucket is larger in volume.

3 0
3 years ago
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