la respuesta es 454 espero que te haya ayudado aunque sea un poquito :D
Answer:
Mean = 528 ppm
Standard deviation = 90.8 ppm
Step-by-step explanation:
Assuming a basis of 100 trees
6 trees with 350 ppm (minimal growth)
10 trees with 450 ppm (slow growth)
47 trees with 550 ppm (moderate growth)
37 trees with 650 ppm (rapid growth)
Mean = xbar = Σx/N
x = each variable
xbar = mean
N = number of variables = 100
Σx = sum of all variables = sum of all the ppm = (6×350) + (10×450) + (47×550) + (37×550) = 52800
xbar = 52800/100 = 528 ppm
Standard deviation = σ = √[Σ(x - xbar)²/N]
x = each variable
xbar = mean = 528
N = number of variables = 12
Σ(x - xbar)² = [6(350 - 528)²] + [10(450 - 528)²] + [47(550 - 528)²] + [37(650 - 528)²] = 824400
σ = √[Σ(x - xbar)²/N] = √(824400/100) = 90.8 ppm
Answer:
midpoint is 0
Step-by-step explanation:
Answer:
True
Step-by-step explanation:
y=5x+3
8=5(1)+3
13=5(2)+3
1) -4(12-3)+5(12)=24
-48+12+60=24
24=24
Therefore x=12
2.) -4(x-3)+5x=24
-4x+12+5x=24
-4x+5x=24-12
x=12
