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uranmaximum [27]
2 years ago
7

I need help on number 20

Mathematics
1 answer:
Mashcka [7]2 years ago
7 0
This is too hard what number 20
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What is the probability of selection for any man in a proportionate random sample, where a sample of 100 will be drawn from a po
kolbaska11 [484]
Working Principle: Stratified Random Sampling

nx = (Nx/N)*n

where:
    nx = sample size for stratum x
    Nx = population size for stratum x
    N = total population size 
    n = total sample size

Given:

  Nx = 100
  N = 1000
  n = 0.5*(1000) = 500

Required: Probability of Man to be selected

Solution:

nx = (Nx/N)*n
nx = (100/1000)*500 = 50 men

ny = (Nx/N)*n
ny = (100/1000)*500 = 50 women


Probability of Man to be selected = nx/(nx + ny)*100 = 50/(50+50)*100 = 50%

<em>ANSWER: 50%</em>
7 0
3 years ago
2. State the domain for the following ordered pairs: { (4, -2), (6, -7), (4, 3), (-8, 1), (-3, 5) } *
Fofino [41]

Answer:

(4,6,4,-8,-3)

Step-by-step explanation:

Domain means of function is the set of all possible inputs for function

4 0
2 years ago
I’m really struggling with these proofs. We just started learning them and I’m highly confused!! Please help :)
gulaghasi [49]
I'm not sure about what exactly your teacher is looking for, but the actual congruency conjecture you would use is:

(angle symbol) 1 (congruency symbol) (angle symbol) 8 - Because they are alternate exterior angles

8 0
3 years ago
Please help me out on this one
vivado [14]

it is definitely the answer B

8 0
2 years ago
Which of the following is the standard form for y+4= 1.5(x-4)
MatroZZZ [7]
Answer: y= 1.5x -2 we find this by solving
6 0
3 years ago
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