Distributions Definition and 309 Threads

  1. M

    Solve for a with P(0 < z < a)=0.2 | Math Help

    How would I solve for a on a question like this: P(0 < z < a)=0.2 ? I know that for a question like P(z < a)= 0.85 I would find the inverse-norm of 0.85 to solve for a. I've tried the same thing for the first question, but of course it doesn't work and I'm out of ideas as to how else I should...
  2. M

    How do I determine the area within 0.5 standard deviations of a given z-value?

    Could someone please tell my how I would determine the area within 0.5 standard deviations of a given z-value? The first one is z=0. What do I need to do?
  3. F

    Statistical Probability Distributions

    I have two questions, I've completed. I am partially sure that the answers I've obtained are correct, and all I really want is confirmation on whether they are correct or not. If not, what am I doing wrong? Question 1: If the joint probability distribution of X1 and X2 is given by...
  4. C

    What Are the Limitations of Multiplying Delta Functions in Quantum Mechanics?

    Hi, I am not seeking a "complete" treatment of distribution functions (like Gelfand or Schwartz). However, I would like some discussion in regards to multiplying delta functions together---especially in QM. From the little I have discovered, distributions do not form an algebra, and thus...
  5. K

    What are Some Questions on Probability Distributions?

    hey guys.. Im having trouble answering the following questions I tried everything I can. I JUSS don't get it 1)In a common carnival game the player tosses a penny from a distance of about 5 feet onto a table ruled in 1-inch squares. If the penny (3/4 inch in diameter) falls entirely...
  6. A

    Statistics Problem: Sampling Distributions - Somewhat OT

    You are on the staff at the Post Office. Your job is to find a process to find the average waiting time for service. How do you collect the data, and once it is collected, what do you do next?
  7. humanino

    Generalized parton distributions

    In some of my previous posts, I referred to GPDs, a recently developped formalism describing hadronic states. I am afraid that this formalism remains largely ignored partly because few introduction review are only recently available. See for instance : Markus Diehl, Phys.Rept. 388 (2003)...
  8. J

    Generating Function for Probability of Equal Sums in Multinomial Distributions?

    I don't understand the generating function used to find the probability that the sum of the numbers of occurring events is a certain quantity. Specifically, I'm having trouble with this problem: "Find the probability of purchasing a ticket with a number whose sums of the first three and last...
  9. I

    Calculating Mean Probability with Sampling Distributions | Sample Size 200

    The mean probability of 100 observations is .0422. If you are not given the data for a sample size of 200, how do you find the mean probability of this data using the mean probability you found from .0422? thanks
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