Mathematics: Find the area of each figure

Find the area of each figure - id15017365, rosepetals2938

marioh620

22.04.2022

n = 601

Step-by-step explanation:

Since we know nothing about the percentage of computers with new operating system, we assume than 50% of the computers have new operating system.

So, p = 50% = 0.5

q = 1 - p = 1 - 0.5 = 0.5

Margin of error = E = 4 percentage points = 0.04

Confidence Level = 95%

z value associated with this confidence level = z = 1.96

We need to find the minimum sample size i.e. n

The formula for margin of error for the population proportion is:

$E=z\sqrt{\frac{pq}{n}}$

Re-arranging the equation for n, and using the values we get:

$n=(\frac{z}{E} )^{2} \times pq\\\\ n=(\frac{1.96}{0.04})^{2} \times 0.5 \times 0.5\\\\ n = 601$

Thus, the minimum number of computers that must be surveyed is 601

0,0(0 оценок)