ChoXlà biến ngẫu nhiên có phân phối mũ với trung bình là|0−4|+ 2.a) Hãy viết công thức xác định hàm mật độ xác suất và hàm phân phối xác suất củaX. b) TínhP(X > E[X]).

the answer is 8

step-by-step explanation:

3.14 x 8x8

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

50-38=12

step-by-step explanation:

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b