Question
Asked Nov 10, 2019

Suppose you choose a real number X from the interval [2, 10] with a density function of the form f(x) = Cx, where C is a constant.
(a) Find C.
(b) Find P(E), where E = [a, b] is a subinterval of [2, 10].
(c) Find P(X > 5), P(X < 7), and P(X2 − 12X + 35 > 0).

check_circleExpert Solution
Step 1

Part (a)

 

 

Here the given function is f(x) = C x

 

 

 Where C is a constant.

 

 

Find the constant function C and the given interval is [2, 10]

 

If f(x) cx
- js(x)ck =1
a
10
Cxdx 1
10
1
2
(10)(2)
(2))
-1
2
2
- [50c-2c]=1
1
[48e]-1c=
48
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If f(x) cx - js(x)ck =1 a 10 Cxdx 1 10 1 2 (10)(2) (2)) -1 2 2 - [50c-2c]=1 1 [48e]-1c= 48

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Step 2

Part (b)

 

 

Find P(E), where E = [a, b] is a subinterval of [2, 10].

 

If f(x)=1
x
48
P(E)= f(x)ds
1
a48
1
48 2
- a]
96
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If f(x)=1 x 48 P(E)= f(x)ds 1 a48 1 48 2 - a] 96

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Step 3

Part (c):

 

P(E), where E = [a, b] is a subinterval of [2, 10].
Now Find P(X > 5), P(X <...

10
-dx
P(x>5)
48
10
1
48 2
1
75
96
96
P(x 7)
48
1
48 2
49-4 45
(2
96
96
96
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Image Transcriptionclose

10 -dx P(x>5) 48 10 1 48 2 1 75 96 96 P(x 7) 48 1 48 2 49-4 45 (2 96 96 96

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