19 a) Find the probability that X > 0.5 0.4753 b) Find the probability that 0.3 < X < 0.63 0.3423 c) Find the expected value of x 0.4825 d) Find the variance of X 0.0806 e) Find the standard deviation of X 0.2838 f) Find the probability that X is within 0.5 standard deviations of its expected value

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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The probability density function of random variable X is f(x) =
a) Find the probability that X > 0.5 0.4753
b) Find the probability that 0.3 < X < 0.63 0.3423
c) Find the expected value of X 0.4825
d) Find the variance of X 0.0806
✔
e) Find the standard deviation of X 0.2838
5.X for 0 ≤ x ≤ 1 and 0 otherwise. Do computations using the R integrate function.
19
f) Find the probability that X is within 0.5 standard deviations of its expected value
g) In the following paste your R script for this problem
b = integrate(h.lower=0,upper-1)$value
#var(x)
var = b-(a)^2
print(var)
#standard deviation
sqrt(var)
Transcribed Image Text:The probability density function of random variable X is f(x) = a) Find the probability that X > 0.5 0.4753 b) Find the probability that 0.3 < X < 0.63 0.3423 c) Find the expected value of X 0.4825 d) Find the variance of X 0.0806 ✔ e) Find the standard deviation of X 0.2838 5.X for 0 ≤ x ≤ 1 and 0 otherwise. Do computations using the R integrate function. 19 f) Find the probability that X is within 0.5 standard deviations of its expected value g) In the following paste your R script for this problem b = integrate(h.lower=0,upper-1)$value #var(x) var = b-(a)^2 print(var) #standard deviation sqrt(var)
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