Answer:
A sample size of at least 87 will be needed.
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 
Now, find M as such
In which 
is the standard deviation of the population and n is the size of the sample.
In this problem, we have that:
So
A sample size of at least 87 will be needed.
Answer:
h(d)= -2d^2 +4d +6
Step-by-step explanation:
Vertex (1,8)
Landing Point (3,0)
Applying the vertex formula, a quadratic equation can be described by its vertex v(x,y) as follows:
Since the vertex in this situation is at v (1,8):
To solve for 'a', apply the other given point (landing point) into the equation:
Expanding the equation yields:
Your answer would be x=23
Answer:
B.
Step-by-step explanation:
A trapezoid is NOT a parallelogram because a parallelogram have 2 pairs of parallel sides. But a trapezoid/trapezium only has 1 pair of parallel sides.
Answer:
8x8x8x8
Step-by-step explanation:
