Answer:
900 sample size
Step-by-step explanation:
To determine the sample size for a proportion, the margin of error formula is used to determine this:
Where p is the proportion, E is the margin of error, n is the sample size, q = 1 - p, is the z score.
Since the proportion is not known, the sample size needed to guarantee the confidence interval and error is at p = 0.5 and q = 1 - p = 1 - 0.5 = 0.5
E = 5% = 0.05, = 3. Hence:
This is called a line <-------------------->. Hope it helps!
Answer:
A ≈ 153.1 units²
Step-by-step explanation:
area (A) of rectangle is
A = length × breadth = 16 × 8 = 128 units²
The diameter of the circle is 8 , then radius = 8 ÷ 2 = 4
area of semicircle = × πr² ( r is the radius )
= × π × 4²
= × π × 16
= 8π
Then area of figure = 128 + 8π ≈ 153.1 units² ( to the nearest tenth )
Answer:
426.9
Step-by-step explanation: