Answer:
Step-by-step explanation:
The estemit will be 0
Answer:
85
Step-by-step explanation:
Answer:
The critical value for the 95% confidence interval is z = 1.96.
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of 
So it is z with a pvalue of
, so z = 1.96.
The critical value for the 95% confidence interval is z = 1.96.
Step-by-step explanation:
Radius = 4 ft
Side of the square = 8 ft
Area of circle = πr² ≈ 3 × 4² = 48 ft²
Square area = a² = 8² = 64 ft²
area of composite shape = Square area - Area if circle = 64 - 48 = 16 ft²