A local grocery delivery time has a uniform distribution over 15 to 65 minutes. What is the probability that the grocery deliver
1 answer:
Answer:
The probability is 0.9
Step-by-step explanation:
We start by calculating the density function
That will be;
f(x) = 1/(b-a)
b and a are the extremes
from the question,
a = 15
b = 65
So f(x)
= 1/(65-15) = 1/50 = 0.02
The probability we want to calculate is;
P( x > 20)
The termination point is 65
So the probability will be
(65-20) * 0.02
= 0.9
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ANSWER:
r =
Explaination:
Convert the given curve into the the polar form.
x = rcosθ
y = rsinθ
in f(x,y) = (x²-y²) - √(x²+y²) = 0
put the values of x & y in given curve equation.
We get at,
g(r,θ) = (r²cos²θ - r²sin²θ) - √(r²cos²θ + r²sin²θ) = 0
g(r,θ) = r²(cos²θ - sin²θ) - √r² = 0
We know that,
cos²θ - sin²θ = cos2θ
g(r,θ) = r²(cos2θ) - r = 0
Solve for r
Finally we get:
r =
