Answer:
a₄ = -9
Step-by-step explanation:
<u>Given:</u>
a₁ = 5
aₙ₊₁ = 2aₙ - 7
To calculate a₄ we would use 3 for n.
aₙ₊₁ = 2aₙ - 7
a₃₊₁ = 2a₃ - 7
a₄ = 2a₃ - 7
However we don't know a₃. Let's start from the bottom.
a₁ = 5
a₂ = a₁₊₁ = 2a₁ - 7
= 2(5) - 7
= 10 - 7
= 3
a₃ = a₂₊₁ = 2a₂ - 7
= 2(3) - 7
= 6 - 7
= -1
a₄ = a₃₊₁ = 2a₃ - 7
= 2(-1) - 7
= -2 - 7
= -9
Answer:
you would use division to change bigger units into smaller ones as a form of cancellation
Answer:
Option B) 19.1 years
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 9
Sample mean, = 19.1 years
Alpha, α = 0.05
Population standard deviation, σ = 1.5 years
We have to approximate best point estimate for population mean.
The best point estimate for population mean is the sample mean.
Thus, we can write
Thus, the correct answer is
Option B) 19.1 years
What do you need help with
Answer: The better estimate is 20cm.