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Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter1: Functions
Section1.2: Functions Given By Tables
Problem 11E: A Troublesome Snowball One winter afternoon, unbeknownst to his mom, a child bring a snowball into...
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Substitute a and b into the left side of the formula from the previous step and express the integral as a limit.
b
fro
- 7x dx = lim
7x dx
area =
7 e
7e
a
Next, determine F(x). First, find the antiderivative of f.
7x
dx =
Let C= 0 in the expression obtained above and let the resulting expression be F(x). Evaluate the result over [0,00) using the far right side of the formula for the area.
lim [O-0]
area =
As b approaches ∞, e
cb
approaches infinity where c is a constant. Use this fact to calculate the limits from the previous step.
area =
+1
Is Property 2 of the definition of a probability density function over the given interval now verified? Choose the correct answer below.
O A. Property 2 of the definition of a probability density function over the given interval has been verified since the expression in the previous step simplifies to 1.
B. Property 2 of the definition of a probability density function over the given interval has not been verified because the expression in the previous step does not simplify to the expected area value.
OC. Property 2 of the definition of a probability density function over the given interval has been verified since the expression in the previous step simplifies to 0.
O D. Property 2 of the definition of a probability density function over the given interval has been verified since the expression in the previous step simplifies to o.
Transcribed Image Text:Substitute a and b into the left side of the formula from the previous step and express the integral as a limit. b fro - 7x dx = lim 7x dx area = 7 e 7e a Next, determine F(x). First, find the antiderivative of f. 7x dx = Let C= 0 in the expression obtained above and let the resulting expression be F(x). Evaluate the result over [0,00) using the far right side of the formula for the area. lim [O-0] area = As b approaches ∞, e cb approaches infinity where c is a constant. Use this fact to calculate the limits from the previous step. area = +1 Is Property 2 of the definition of a probability density function over the given interval now verified? Choose the correct answer below. O A. Property 2 of the definition of a probability density function over the given interval has been verified since the expression in the previous step simplifies to 1. B. Property 2 of the definition of a probability density function over the given interval has not been verified because the expression in the previous step does not simplify to the expected area value. OC. Property 2 of the definition of a probability density function over the given interval has been verified since the expression in the previous step simplifies to 0. O D. Property 2 of the definition of a probability density function over the given interval has been verified since the expression in the previous step simplifies to o.
Verify Property 2 of the definition of a probability density function over the given interval.
f(x) = 7 e -7x
[0,0)
What is Property 2 of the definition of a probability density function?
O A. The area under the graph of f over the interval [a,b] is a.
O B. The area under the graph of f over the interval [a,b] is 1.
OC. The area under the graph of f over the interval [a,b] is b.
Since the given interval, [0,0), has a right-endpoint of infinity, the area under the graph of f will be calculated using an improper integral. Choose the correct formula for an improper integral over the interval [a,co]
below.
O A. 00
b
f(x) dx = lim
f(x) dx = lim [F(x)] = lim (F(a)- F(b))
a
O A. 0
f(x) dx = lim [F(x)] = lim (F(a) - F(b))
b-00 a
f(x) dx = lim
a
О В.
b
00
f(x) dx = lim f(x) dx = lim [F(x)] = lim (F(b) -F(a))
%3D
b 0 a
b 00
a
O C. 0
f(x) dx = lim f(x) dx = lim [F(x)] = lim (F(b)- F(a))
b00 a
a
O D. 00
b.
S) ax = lim frox) dx= lim [F(x); = lim (F(a)- F(b)
f(x) dx = lim [F(×)] = lim (F(a)- F(b))
b 00 a
b00
a
Transcribed Image Text:Verify Property 2 of the definition of a probability density function over the given interval. f(x) = 7 e -7x [0,0) What is Property 2 of the definition of a probability density function? O A. The area under the graph of f over the interval [a,b] is a. O B. The area under the graph of f over the interval [a,b] is 1. OC. The area under the graph of f over the interval [a,b] is b. Since the given interval, [0,0), has a right-endpoint of infinity, the area under the graph of f will be calculated using an improper integral. Choose the correct formula for an improper integral over the interval [a,co] below. O A. 00 b f(x) dx = lim f(x) dx = lim [F(x)] = lim (F(a)- F(b)) a O A. 0 f(x) dx = lim [F(x)] = lim (F(a) - F(b)) b-00 a f(x) dx = lim a О В. b 00 f(x) dx = lim f(x) dx = lim [F(x)] = lim (F(b) -F(a)) %3D b 0 a b 00 a O C. 0 f(x) dx = lim f(x) dx = lim [F(x)] = lim (F(b)- F(a)) b00 a a O D. 00 b. S) ax = lim frox) dx= lim [F(x); = lim (F(a)- F(b) f(x) dx = lim [F(×)] = lim (F(a)- F(b)) b 00 a b00 a
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