Answer: 
Step-by-step explanation:
Let 
be the sample proportion.
As per given , we have
n= 411
Standard error : se=0.016
Critical value for 99% confidence : 
Confidence interval for population proportion :-
Hence, the 99% confidence interval for the proportion of all US adults ages 55 to 64 to use online dating :
3.24 x 10-4 in standard notation is 0.000324
Answer:
5 units
Step-by-step explanation:
From the coordinates, we have;
x1 = -5
x2 = -1
y1 = 5
y2 = 2
Now,from the distance formula, distance is;
d=√((x2 - x1)²+(y2 - y1)²)
Plugging in the relevant values, we have;
d = √((-1 + 5)²+(2 - 5)²)
d = √(16 + 9)
d = √25
d = 5
We know that
y=-4
compared to focus (3,-7)
vertex is in middle
so
(-4-7)/2----> -5.5
so
vertex is (3,-5.5)
and distance from vertex to focus is from -5.5 to -7 or 1.5
focus is below vertex
so
p is negative
is a vertical parabola open down
(x-3)²=4(-1.5)(y+5.5)(x-3)²=-6(y+5.5)
the answer is the option
<span>D) (x−3)2=−6(y+5.5)</span>
No because the doctor just rounded to the nearest tenth
