Explain why this is or is not a probability distribution × 1 2 3 4...

Question

Question

Explain why this is or is not a probability distribution
× 1 2 3 4
P(×) 0.4 0.3 0.3 0.0

Is this not a probability distribution since the probability add to 1.4, not 1

Answer 1

Answer #1

Please don't hesitate to give a "thumbs up" for the answer in case you're satisfied with the answer

This is a probability distribution , because all P(x)s all add up to a 1
([ .4+.3+.3+0.0)] = 1.0

Part 2)

There is just 1 variable here: "are students getting a summer job" -the values this variable can take is - Yes/No/Maybe

This is a random variable and it can take only 3 values

Answer 2

Similar Homework Help Questions

1. (3 points) Explain why each of the following is not a valid discrete probability distribution....

1. (3 points) Explain why each of the following is not a valid discrete probability distribution. P(x) 0.35 0.10 T-Mobile 0.25 MetroPCS 0.15 0.05 0.10 a. Verizon Sprint Cricket Other b.X Px 0 0.2 2 0.3 0.4 6 0.5 -2 0.1 0 0.2 2 0.2 4 0.2 8 0.3
Why is the variable "number of saved If the P(x)'s below represent the probabilities of each...

Why is the variable "number of saved If the P(x)'s below represent the probabilities of each outcome, telephone numbers on a person's phone"explain whylthis is or is not a binomial probability distribution, classified as a discrete variable? 1 2 3 P(x) 0.4 0.3 0.3 0.0 4
Discrete Random Variable. The random variable x has the discrete probability distribution shown here: x -2...

Discrete Random Variable. The random variable x has the discrete probability distribution shown here: x -2 -1 0 1 2 p(x) 0.1 0.15 0.4 0.3 0.05 Find P(-1<=x<=1) Find P(x<2) Find the expected value (mean) of this discrete random variable. Find the variance of this discrete random variable

Question 10 1 pts The following is the Probability Distribution Function for a discrete Random Variable....

Question 10 1 pts The following is the Probability Distribution Function for a discrete Random Variable. What is the expected value of x? HQ8 P(x) 100.1 0.3 0.4 0.2
Question 11 1 pts The following is the Probability Distribution Function for a discrete Random Variable....

Question 11 1 pts The following is the Probability Distribution Function for a discrete Random Variable. What is the expected value of x? X P(x) 10 11 12 13 0.1 0.3 0.4 0.2
please fast and clear A discrete random variable X has the following probability distribution. 2 -1...

please fast and clear A discrete random variable X has the following probability distribution. 2 -1 0.4 0 0.3 f(x) a Find P(X>0). Select one: 0.6 1 0.3 0.5 0.4

Question 3 1 pts Determine whether the distribution is a discrete probability distribution. If not, state...

Question 3 1 pts Determine whether the distribution is a discrete probability distribution. If not, state why. X 100 200 300 400 500 P(X) 0.24 0.17 0.36 0.16 0.08 No, violates Rule 1. P(X) = 1 No violates both Rules Yes. It's a discrete probability distribution No, violates Rule 2.0 < P(X) 51
Determine whether or not the distribution is a discrete probability distribution and select the reason why...

Determine whether or not the distribution is a discrete probability distribution and select the reason why or why not. x 77 88 1010 P(X=x)P(X=x) 3434 −12−12 3434 Answer 2 Points Keypad Tables First, decide whether the distribution is a discrete probability distribution, then select the reason for making this decision. Decide Yes No Reason
The random variable x has the discrete probability distribution shown here: x -2 -1 0 1...

The random variable x has the discrete probability distribution shown here: x -2 -1 0 1 2 p(x) 0.1 0.15 0.4 0.3 0.05 1) Find P(x<2) Please use up to 4 decimal places and use the proper uses of rounding. Excel can be a helpful calculator in these problems. 2) Find the expected value (mean) of this discrete random variable. Please use up to 4 decimal places and use the proper rules of rounding. Excel can be a helpful calculator...

Discrete Probability Distributions, Continuous Probability Distri- butions, and Sampling Distributions (100 points) 1. Does each of...

Discrete Probability Distributions, Continuous Probability Distri- butions, and Sampling Distributions (100 points) 1. Does each of the following tables represent a probability distribution? Explain why or why not. For those that represent a probability distribution, calculate the mean and variance of the variable r. a f(x) 0.5 0.25 0.25 f(x) 0.4 0.4 0.4 0.2 ( X 1 2 3 4 C) f(x) 0.5 0.3 0.3 -0.1