Answer:
a) 752 medical files should be included.
b) 372 medical files should be included.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the z-score that has a p-value of .
The margin of error is of:
90% confidence level
So , z is the value of Z that has a p-value of , so .
Question a:
This is n for which M = 0.03. We have no estimate, so we use . So
Rounding up:
752 medical files should be included.
Question b:
Now we have that:
So
Rounding up:
372 medical files should be included.
2/10 represents 20 percent, as 10 is 100% because it is the Max, so something like 4/10 would be considered 40%
Answer:
Step-by-step explanation:
We connect the midpoints of any two sides of a triangle with a line segment, then that line segment is following two properties. The line segment will be parallel to the third side. The length of the line segment will be one-half the length of the third side. This is how you prove it.
Recall the values of the trigonometric functions at the required angles:
So, the number -4 can be thought of as
1. The first step is Distribution, a = 10a - 14. You can determine this by multiplying 2 into (5a - 7). 2*5a =10a, while 2*- 7 = - 14. Resulting in, a = 10a - 14.
2 . Now, subtract 10a on both sides, meaning 10a - 10a and a - 10a. The equation simplified is - 9a = - 14.
3. Divide by - 9 on both sides. The solution to the equation is a = 14/9