Answer:
The minimum number of cities we need to contact is 96.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of
, and a confidence interval
, we have the following confidence interval of proportions.

In which
Z is the zscore that has a pvalue of
.
The margin of error is:

95% confidence interval
So
, z is the value of Z that has a pvalue of
, so
.
In this problem, we have that:







The minimum number of cities we need to contact is 96.
Step-by-step explanation:
FÓRMULA:
= b(8 m)
SE DESPEJA
b =
/8 m = 18 m
Circumference, C = 2
r. Find the radius using this formula then use it to find the area with A = 
.
OR use the formula A = 
Hope it helps. mark as brainliest if it does...
538
Explanation
You divide 359 by 4 and then you multiply the answer by 6
Hope this picture helps!
<span>The 2.7 has been broken into 2 and 0.7, and then both of these parts have been multiplied by 3, giving you the two answers of 6 and 2.1 shown. Adding these two together gives you the answer of 8.1. </span>