The answer is 75%..
Hope this helped
Answer:
We need a sample size of at least 719
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 the margin of error M as such

In which
is the standard deviation of the population and n is the size of the sample.
How large a sample size is required to vary population mean within 0.30 seat of the sample mean with 95% confidence interval?
This is at least n, in which n is found when
. So






Rouding up
We need a sample size of at least 719
Answer:
The surface area of the model is 
Step-by-step explanation:
we know that
The surface area of the square pyramid is equal to the area of the square base plus the area of four lateral triangles
so

Answer:
The equation was y= -3/4x + 19/4 in slope-intercept form, but it is x + 4/3y= 19/3
Answer: 3rd one
Step-by-step explanation: