1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sladkih [1.3K]
3 years ago
15

Assume that instead of conducting experiments, Latané and Darley had used a correlational method to study the relation between t

he number of bystanders who witness an emergency and how quickly a victim receives help. Assume that the correlational data were compatible with results from experiments: the more bystanders, the longer it took bystanders to help. What type of correlation is this?A) a nonlinear correlationB) a zero correlationC) a positive correlationD) a spurious correlationE) a negative correlation
Mathematics
1 answer:
Len [333]3 years ago
7 0

Answer:

  C)  a positive correlation

Step-by-step explanation:

<em>More people ⇒ Longer time</em> is a positive correlation between those variables. However, <em>longer time</em> is not the desired outcome.

Rather, <em>shorter time</em> is the desired outcome. The correlation between <em>more people</em> and <em>shorter time</em> is negative. In order to compute that correlation numerically, one would have to define a function that would give a numerical value for "shorter time" that would model the goodness of outcome as time gets shorter.

You might be interested in
Chau is riding his bicycle. He rides at a speed of 12.5 kilometers per hour for 5 hours. For how many kilometers does he ride?
Firlakuza [10]
12.5 x 5 = 62.5km :)
4 0
3 years ago
Read 2 more answers
They are all simplest terms
NikAS [45]

Step-by-step explanation:

- 3(s - 10) + 7( - 2s - 1)

- 3s  + 30  - 14s - 7

- 17s + 23

is the required answer.

Distributive Property was used here.

Hope it Helps :)

7 0
3 years ago
Help please <br>the right answer is 10 but I don't know how to factor it
Semenov [28]
(m-2n)(3+m-2n) is it factored.  
5 0
3 years ago
Please help with these problems! Will mark answer as brainliest and give 30 points. You have to show your work for each problem.
gulaghasi [49]

Answer:

1) (2x + 2)(x + 2)

2)  2(x + 1)(x - 1)

3) (x^2 + 3)(x^2 - 3)

4) 2x(x + 5)(x - 2)

5) (5x + 2y)(5x - 2y)

Step-by-step explanation:

1)

2x^2 + 6x + 4

= 2x^2 + 4x + 2x + 4

= 2x(x + 2) + 2(x + 2)

= (2x + 2)(x + 2)

2)

2x^2 - 2

= 2(x^ 2 - 1) (The difference of two squares)

= 2(x + 1)(x - 1)

3)

x^4 - 9 (The difference of two squares)

=(x^2 + 3)(x^2 - 3)

4)

2x^3 + 6x^2 - 20x

= 2x(x^2 + 3x - 10)

= 2x(x + 5)(x - 2)

5)

25x^2 - 4y^2         (The difference of two squares)

= (5x + 2y)(5x - 2y)

4 0
3 years ago
Answer urgent please!!
butalik [34]

Answer:

  • 15

Step-by-step explanation:

u=5i-j\\\\v=3i+j\\\\w=i+4j\\

v+w

3i+j+i+4j\\\\4i+5j\\\\u*(v+w)\\\\(5i-j)(4i+5j)\\\\20-5\\\\\boxed{15}

~

4 0
3 years ago
Other questions:
  • Two solid cones are geometrically similar and the height of one is
    9·1 answer
  • you want to buy three loaves of bread that cost $1.50 each and a jar of peanit butter that $4. a jar of jelly is $2.75, but you
    7·2 answers
  • What is P(tails ) P(tails)start text, P, left parenthesis, t, a, i, l, s, end text, right parenthesis? If necessary, round your
    7·1 answer
  • Which of the following statements describes how to calculate net worth?
    5·1 answer
  • I need help please!
    11·1 answer
  • I WILL AWARD BRAINLIEST!! PLEASE HELP!!
    8·1 answer
  • 4. The sales price of a car is $12,590, which is 20% off the original price. What is the original price?
    6·1 answer
  • The RADIUS of the barrel is 9.5. <br><br> What is the circumference of the barrel?
    7·1 answer
  • HELP WILL MARK BRAINLIEST IF GOTTEN RIGHT!!!!!!! PLS DONT ASNWER IF U DONT KNOW
    14·1 answer
  • Determine if (−2,4) is a solution to the following system of inequalities.-3x &gt; -7y -37x &gt; -5y -4
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!