Answer:
5n-9
Step-by-step explanation:
Answer:
8.0, 16.0
Step-by-step explanation:
times the before number by itself
Mean:
E[Y] = E[3X₁ + X₂]
E[Y] = 3 E[X₁] + E[X₂]
E[Y] = 3µ + µ
E[Y] = 4µ
Variance:
Var[Y] = Var[3X₁ + X₂]
Var[Y] = 3² Var[X₁] + 2 Covar[X₁, X₂] + 1² Var[X₂]
(the covariance is 0 since X₁ and X₂ are independent)
Var[Y] = 9 Var[X₁] + Var[X₂]
Var[Y] = 9σ² + σ²
Var[Y] = 10σ²
Answer:
Hello!
______________________
8.14*10=81.4 Is correct
Step-by-step explanation: Multiply 10 by 8.14.
Hope this helped you!
:D
Answer:
C
Step-by-step explanation:
You can see by looking at the graph that Abby rode the fastest. She rode about 9 miles in 25 minutes. The others weren't able to ride that fast.
Hope I helped :)
