تم الحل ✓
categoryإحصاء
schoolبكالوريوس
event_available2026-07-15
السؤال
Transcribed Image Text:
1.
Consider a continuous random variable X with the probability density function
fx(x) =
x
C
3≤x≤7,
zero elsewhere.
a)
Find the value of C that makes fx(x) a valid probability density function.
b)
Find the cumulative distribution function of X, Fx(x).
"Hint":
1.
To double-check your answer: should be Fx (3)=0, Fx (7)=1.
(continued)
100
Consider Y= g(x)=
2.
c)
Find the support (the range of possible values) of the probability distribution of Y.
d)
"Hint":
e)
Use part (b) and the c.d.f. approach to find the c.d.f. of Y, Fy(y).
Fy(y) = P(Y≤y) = P(g(x)≤y) = ....
Use the change-of-variable technique to find the p.d.f. of Y, fy(y).
"Hint": fy(y) = x(g¹(y))
"Hint":
dx
dy
=
To double-check your answer: should be fy(y) Fy(y).
check_circle الجواب — حل مفصل خطوة بخطوة
hourglass_top
🔒
الحل الكامل متاح للمشتركين
اشترك في أرشيف الأسئلة لعرض هذا الحل وآلاف الحلول المفصلة خطوة بخطوة من معلمين معتمدين.