A manufacturer produces laptops with variable quality. In fact, for each laptop, its quality level A has a Gamma distribution with shape parameter a > 0 and rate parameter B > 0, that is, A has density function Ba fa(^) I(æ)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 91E
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A manufacturer produces laptops with variable quality. In fact, for each laptop, its
quality level A has a Gamma distribution with shape parameter a > 0 and rate
parameter B > 0, that is, A has density function
Ba
fa(A)
T(a)
where I' is the Gamma function. It is not necessary to know properties of the Gamma
function to answer this question.
If a laptop has quality level A, then it crashes X times a day, where X has a Poisson
distribution with parameter A.
Given that a laptop crashes x times today, what is the conditional probability density
of A, fajx(^|æ)?
Ba
xª–1e-BA
r(a)
а.
Ob.
T(a)
pa
ta-z-1r!e-(B–1)A
r(a)
c.
-I-
pa
Da-2 (x + 1)e-BA
Г(а)
d.
Transcribed Image Text:A manufacturer produces laptops with variable quality. In fact, for each laptop, its quality level A has a Gamma distribution with shape parameter a > 0 and rate parameter B > 0, that is, A has density function Ba fa(A) T(a) where I' is the Gamma function. It is not necessary to know properties of the Gamma function to answer this question. If a laptop has quality level A, then it crashes X times a day, where X has a Poisson distribution with parameter A. Given that a laptop crashes x times today, what is the conditional probability density of A, fajx(^|æ)? Ba xª–1e-BA r(a) а. Ob. T(a) pa ta-z-1r!e-(B–1)A r(a) c. -I- pa Da-2 (x + 1)e-BA Г(а) d.
O e. (B+1)“1z+a-1e-(B+1)A
Г(а)
O f. 1z+a-le-(B+1)\ga
T(a)
Ba
g.
r(a)
O h. none of the other options are correct
O i. Ae-A
a!
(B+1)ª+z
A++a-1e-(B+1)A
I(a)
Oj.
pa
O k.
r(a)
O I. (1+B)ª+#
I(r+a)
++a-1e-(B+1)A
Transcribed Image Text:O e. (B+1)“1z+a-1e-(B+1)A Г(а) O f. 1z+a-le-(B+1)\ga T(a) Ba g. r(a) O h. none of the other options are correct O i. Ae-A a! (B+1)ª+z A++a-1e-(B+1)A I(a) Oj. pa O k. r(a) O I. (1+B)ª+# I(r+a) ++a-1e-(B+1)A
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