Answer:
The answer of this question is D
Step-by-step explanation:
Time 2
Answer:
(38.1,88.6)
Step-by-step explanation:
We are given the following in the question:
Sample mean,
= 38.3
Sample size, n = 695
Alpha, α = 0.05
Population standard deviation, σ = 3.6
95% Confidence interval:
Putting the values, we get,

Expand the binomial first, then distribute the 4:
4 (<em>x</em> + 1)² = 4 (<em>x</em> ² + 2<em>x</em> + 1)
… = 4•<em>x</em> ² + 4•2<em>x</em> + 4•1
… = 4<em>x</em> ² + 8<em>x</em> + 4
Answer:
21x-28
Step-by-step explanation:
When 7 is distributed across this equation, you get 21x and 28