Explore BrainMass

Statistics Problem Set: Discrete Probability Distribution

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

4.182: For each of the following examples, decide whether x is a binomial random variable and explain your decision. (see examples attached).

4.184: Consider the discrete probability distribution shown here.

x 10 12 18 20
p(x) .2 .3 .1 .4

a) Calculate mean, variance and standard deviation.
b) What is P(x < 15)?
c) Calculate mean + or - 2*standard deviation
d) What is the probability that x is in the interval from c.

4.186: Suppose x is a Poisson random variable. Compute p(x) for each of the following cases:
a) Lambda = 2, x = 3
b) Lambda = 1, x = 4
c) Lambda = 0.5, x = 2

© BrainMass Inc. brainmass.com March 22, 2019, 12:33 am ad1c9bdddf


Solution Preview

Please see attached document for full solutions.
a) Yes, x is a binomial random variable. As the event a chip is defective is independent of each other, and the probability that each chip is defective is fixed. In ...

Solution Summary

The expert examines discrete probability distribution for statistics problem sets.