Answer:
a) 0.9548
b) 0.0452
Step-by-step explanation:
Specificity of test:
The specificity of a test is the true negative rate, that is, the proportion of people without the disease that test negative.
Sensitivity of test:
The sensitivity of a test is the true positive rate, which is the proportion of people with the disease that test positive.
a. What proportion of the people who test positive for Malaria would we expect to actually have the disease?
This is the sensitivity of the test, which is of 95.48%, so the proportion if 0.9548.
b. What proportion of people who test positive for Malaria will not have the disease?
True positive rate is of 95.48%.
1 - 0.9548 = 0.0452
So the proportion of people who test positive for Malaria will not have the disease is 0.0452.
For this case we have that by definition, the density is given by:
Where:
M: It is the mass
V: It is the volume
We find the volume of the cylinder:
Where:
r: It is the radius of the cylinder
h: It is the height
So the density is:
Answer:
One rotation means going once through a circular route.
One circular route means turning around by 360°
Now we know that one rotation always makes 360°.
The hard disk rotates 256 times in 1 second.
First we shall calculate the number of degrees.
In one rotation it covers 360°.
So in 256 rotations it covers 256 × 360 = 92160°
But these 256 rotations are made in one second.
So the disk passes 92160° in one second.
Answer: The hard disk passes 92160° in one second
Answer:
A. 4(0*8)=x
B. x=0
C. I used the zero product property
Step-by-step explanation:
For part B, I did 0*8 which is 0
then 0*4=0
this means that x=0
Answer:
y = - 
x + 6
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
here m = - , hence
y = - x + c ← is the partial equation
to find c substitute (6, - 3 ) into the partial equation
- 3 = - 9 + c ⇒ c = - 3 + 9 = 6
y = - x + 6 ← equation in slope- intercept form
