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docker41 [41]
3 years ago
7

An urban planner examines police-report data for many cities and towns and discovers that cities with professional football team

s tend to have higher numbers of reported small crimes, such as burglary.
Which statement best explains the effect of confounding in this relationship?

A.) The football teams are a direct cause of increased small crimes.
B.) In cities without football teams, the small crimes often go unreported.
C.) Cities without football teams most likely have lower rates of reported small crimes.
D.) Cities with football teams tend to be large, which means they have more reported small crimes.
Mathematics
1 answer:
eduard3 years ago
3 0

Answer: The answer is D

Step-by-step explanation:

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Are these two expressions equivalent?<br> 5(3+2) and 5.3 + 5.2
vovangra [49]

Answer:

No

Step-by-step explanation:

5(3+2) = 5(5) = 25

5.3 + 5.2 = 10.5

25 doesn't equal 10.5 therefore 5(3+2) isn't equivalent to 5.3 + 5.2

5 0
3 years ago
Select the correct answer.
aleksley [76]

Answer:

$24,890.46, $25,109.59

Step-by-step explanation:

Given:

n = 48, the sample size

m = $25,000, th sample mean

σ = $3000, the maximum variance

The standard deviation is

s = √σ = √(3000) = 54.772

As a rule of thumb, the range is 4 times the standard deviation. Therefore the range is

R = 4*54.772 = 219.09

Half the range is

R/2 = 219.09/2 = 109.45

The required  range is

(25000-109.45, 25000+109.45) = (24890.46, 25109.54)

Answer: $24,890.46, $25,109.54

3 0
3 years ago
4 drivers/ 30 square miles is they want to offer service to country of 75 square miles, how many must they have
dmitriy555 [2]
By proportion:-

4 / 30 = x / 75  where x is number needed for  the '75' country

30x = 300

x = 10


They need 10 drivers.
3 0
3 years ago
When two objects reach the same time-space coordinates, they generally collide with each other. How is this different from what
nikklg [1K]

Answer:

Waves superimpose upon each other when they collide, while objects do not

Step-by-step explanation:

The main difference between the collision of waves and the collision of objects is simply the superposition principle.

When waves collide, they do not do so in the same way objects do. The superposition principle explains that waves can either collide in a constructive or destructive manner.

Case A: Waves colliding in a constructive manner

When waves collide in a constructive manner, this means that they are in phase, in simpler terms, it means that they have the same shape as they move through space-time. Constructive collision leads to a formation of a bigger wave with a higher amplitude. This is how stereo speakers operate. They produce louder sounds by releasing the same audio waves, causing them to superimpose upon each other.

Case B: Waves colliding in a destructive manner:

When waves are out of phase(i.e do not have the same shape as they move through space-time) and they collide, they try to cancel each other out, leading to a new wave with a weaker amplitude. This is how noise-cancelling headphones work. They emit an equal and opposite wave sound to the noise around your ears, thus cancelling it out.

4 0
3 years ago
Which student expression is equal to 8×5
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There are 8 students in each class and there are 5 classes
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