Answer:
He will need 4 newborns in the sample to be 95% confident.
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 length of the sample.
So:
He will need 4 newborns in the sample to be 95% confident.
Answer:
E)82
Step-by-step explanation:
The formula is
A^2 + B^2= C^2
the two sides that make up the right angle is always A and B
To find the equation of the line, we are going to use the point-slope form, which is listed below:
You may notice that we have a point, but no slope is given to us. However, the problem states that the line is parallel to the equation , which means that it has the same slope as this line, which is 3. (Remember that this line is set up in
form, where
is the slope)
Thus, we can now insert our values into the point-slope formula to find the equation of our line.
The problem made it clear that it didn't want the form , so let's put it in standard form:
The equation of our line is .