The number line is a closed circle because the circle at the ends are not shaded in. A closed circle to the right means greater than. (>) A closed circle to the left means less than. (<)
Answer:
666
Step-by-step explanation:
From this question,
a = 1-99%
a = 1-0.99
a = 0.01
5% = z(0.05) = 2.58 when we check the standard normal table
Therefore we calculate n as:
n = (z/E)²*p*1-p
Z = 2.58
E = 0.05
P = 0.5
1-p = 0.5
(2.58/0.05)²x0.5x0.5
= 51.6²x0.5x0.5
= 665.64
Therefore n is approximately 666.
Positive,
because 2*12 equals to 24, and 24 is positive!