have a look at our package distr:
library(distr)
x1 <- Norm(mean = 0, sd = 1)
x2 <- Binom(size = 1, prob = 0.75)
x3 <- x1 + x2
plot(x3)
# to get density, cdf, quantile, and random numbers use
d(x3)(5)
p(x3)(0)
q(x3)(0.975)
r(x3)(20)
# you can also have additonal coefficients; eg.
x4 <- 3*x1 + 2*x2
plot(x4)
For more details on the computations see http://arxiv.org/abs/1006.0764
hth,
Matthias
On 22.04.2014 13:11, Ms khulood aljehani wrote:
Hello
i have two independent variablesx1 from normal (0,1)x2 from bernoulli (o.75)
i need the density estimation of(b1*x1) + (b2*x2)
where b1 and b2 are two fixed coefficients
thank you
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