Hello!
You run 5 miles a hour
To find how far you go in half an hour you divide the distance by 2
5 / 2 = 2.5
To find how far you go in 2 1/2 hours you multiply the distance by 2.5
5 * 2.5 = 12.5
The answers are 2.5 miles in half an hour and 12.5 miles in 2 1/2 hours
Hope this helps!
Answer and Step-by-step explanation:
The given function is:
F(y) =1 – 1/y2 , 1 ≤ y < ∞
Verify function is valid
Limy->-∞f(y) = Limy->-∞ 0 = 0
Limy->∞f(y) = Limy->∞ 1 – 1/y2
= 1, for y ≤ 1
F(y) = 0 is constant. For y > 1, f”(y) = 2 / y3 > 0
So, function is increasing. Therefore f(y) is cdf.
Probability density function
The probability density function is
F(y) = d/dy f(y) = {(2/y2 if y>1o if y≤1 )}
z = 5(y+1)
F (z) = p (z ≤z) = p (5(y+1) ≤z)
= p(y ≤ (z/5) – 1)
F (z) ={(0 if z≤0 and 1-1/(z/5-1)2 if z>0 )
Since
lies in the interval
, and
in this interval, you know that when you take the square root, you should consider the positive root only.
So,
They are functions if the x’s don’t repeat. A, C, D are functions