(2n + 4) + 6 = –9 + 4(2n + 1)

n=2.5

Step-by-step explanation:

(2n+4)+6=-9+4(2n+1)

Expand parentheses:

2n+10=-9+8n+4

Combine like terms:

15=6n

Divide both sides by 6:

n=2.5

Hope this helps!

The upper limit for population proportion is 0.3666

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 219

Number of people who have ability to speak a language other than English, x = 63

99% Confidence interval:

Putting the values, we get:

is the required 99% confidence interval for population proportion.

Thus, the upper limit for population proportion is 0.3666