Question

I am trying to figure out the probability, expected value, variance, and standard deviation for a...

I am trying to figure out the probability, expected value, variance, and standard deviation for a series of dice rolls. For example, if I roll a six-sided die in an attempt to roll a 1, and it takes me 13 rolls before a 1 appears, what are those answers? I believe I have figured out the probability equation:

P(P-1)^x where x is the number of rolls - 1 so for 13 rolls the probability would be: 1/6(1-1/6)^12 = .01864045

Is this the correct equation?

What equations would I need to find Expected Value, Variance, and Standard Deviation?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
What is the meaning of variance and standard deviation? (I understand how to calculate them, but...
What is the meaning of variance and standard deviation? (I understand how to calculate them, but understanding the concept behind them is confusing.) What happens if the variance calculated is the same as them mean? What is the meaning behind these numbers? For example, you roll a 6 sided dice and each possibility is equally likely. Then both the mean and variance is 3.5.
From the probability distribution given below, find the mean, variance, standard deviation and expected value of...
From the probability distribution given below, find the mean, variance, standard deviation and expected value of the random variable, X. Round your values for variance and standard deviation to two decimal places (if necessary). X 27 32 54 63 78 P(X) 5/18 1/4 1/12 2/9 1/6
Please solve the following showing all the steps. Using the sample mean, variance, and standard deviation...
Please solve the following showing all the steps. Using the sample mean, variance, and standard deviation equations with steps. I don't know how to do this and would like to learn. Also, is this considered a loaded dice? Consider the roll of two dice. Let X be a random variable representing the sum of the number of dots appearing on each of the dice. The probabilities of each possible value of X are as follows: 2 1/36 3 2/36 4...
I am doing a RLC circuit lab and Im trying to figure out the value for...
I am doing a RLC circuit lab and Im trying to figure out the value for I because I have this equation Vc=I/2πf C I have the values for F and C and im trying to find VC but I do not know what I Is
Calculate Expected Rate of Return, variance, standard deviation, and coefficient variation. I am unsure of how...
Calculate Expected Rate of Return, variance, standard deviation, and coefficient variation. I am unsure of how to solve this problem Outcomes:    Probability Return Better than Expected:    0.15 0.45 As Expected: 0.55 0.2 Worse than Expected:    0.25    0.05 Poor:    0.05    -0.25
What are the expected value, variance and standard deviation of the following probability distribution? Number of...
What are the expected value, variance and standard deviation of the following probability distribution? Number of Offices Proportion of Students p(X) 0 0.12 1 0.18 2 0.26 3 0.24 4 0.13 5 0.07 E(X) Var(X)
If you roll an eight sided die and x is the outcomes, the probability distribution of...
If you roll an eight sided die and x is the outcomes, the probability distribution of x is x P(x) 1 1/8 2 1/8 3 4 5 6 7 8 Mean = x.p(x) = Variance = x2.px-μ2 = Standard deviation =
A standard die has 6 side and the theoretical probability of landing on any one of...
A standard die has 6 side and the theoretical probability of landing on any one of these in a single roll of the die is 1/6. On average then, how many times would I have to roll the die in order to be certain of landing on a 5? Estimate this over 2000 "rolls" of the die. How do I go about showing this using an excel spreadsheet?
What is the total probability of rolling a natural on the come-out roll in craps? 2/36...
What is the total probability of rolling a natural on the come-out roll in craps? 2/36 4/36 6/36 8/36 If a player’s point in craps is 8, what is the probability that they will win by rolling another 8 before a 7? 5/36 6/36 5/11 6/11 Assume that rolling an 8 before a 7 will pay at 6-to-5 odds net. Find the net payoff on a $5 wager. $1.20 $5 $6 $11 Find the expected number of 5’s from 100...
I cannot figure out how to solve for the mean and standard deviation for this data...
I cannot figure out how to solve for the mean and standard deviation for this data set. x   P(x) 1   0.01 2   0.01 3   0.04 4   0.02 5   0.02 6   0.09 7   0.08 8   0.04 9   0.07 10   0.02 11   0.04 12   0.04 13   0.16 14   0.08 15   0.08 16   0.02 17   0.02 18   0.08 19   0.04 20   0.04
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT