First translate into an equation. Then solve
N=non-negative integers.
2(n^2) = 4n. Divide both sides of = by 2
n^2 = 2n subtract 2n from both sides
n^2 - 2n = 0. Factor
n(n - 2) =0. Solve factor = 0.
N = 0. N-2= 0
+2. +2
N= 2
So 0 & 2 are both answers
Answer:
95% confidence interval for the proportion of days that IBM stock increases.
(0.45814 , 0.58146)
Step-by-step explanation:
<u><em>Step:1</em></u>
Given that a stock market analyst notices that in a certain year, the price of IBM stock increased on 131 out of 252 trading days.
Given that the sample proportion

Level of significance = 0.05
Z₀.₀₅ = 1.96
<u><em>Step:2</em></u>
<u><em>95% confidence interval for the proportion of days that IBM stock increases.</em></u>
<u><em></em></u>
<u><em></em></u>

(0.5198 - 0.06166 , 0.5198+0.06166)
(0.45814 , 0.58146)
<u><em>Final answer:-</em></u>
95% confidence interval for the proportion of days that IBM stock increases.
(0.45814 , 0.58146)
You could draw a parallelogram.