distribution probability

  1. B

    Understanding and Calculating Credible Intervals

    Hi, I am having trouble understanding and calculating credible intervals. My goal is to understand confidence intervals vs. credible intervals. From what I understand, the credible interval is a range of values (parameter?) that is fixed (not really) based on the prior probability...
  2. M

    Help with Statistical distributions

    Hello I have the following doubt, I hope you can help me, I really appreciate it - I have a population of 500 businesses - A sample of the businesses with the highest sales (200 businesses) - Each business can sell many products, but I would like to know the behavior of only one group or...
  3. A

    Higher standard deviation than the mean

    HI ! Excuse me for my english, my writing is not very good. I want to know what implies or what explains in an excercise when the standard deviation (STD=67) is higher than the mean (M=38), and the histogram behaves like an exponential distribution. Thanks by the way ! :tup: Regards from...
  4. D

    Using MLE to find the right distribution

    Hi, I know that MLE can be used to find the best fitting parameter assuming a that the distribution is known, but is there a way (using Excel or SAS) to find what distribution best fits the data (together with the best parameter of the distribution), in other words, the distribution is not...
  5. H

    Trying to handicap the outcome of a race based on given probabilities

    Hello everyone. The past year or so I've been generating projection models for various sports to predict the performance of individual players. The approach varies by sport. I've stumbled onto one situation where I need to significantly improve my abilities in order to finalize the...
  6. C

    Probabilities from Distribution Functions

    Buses arrive at fifteen minute intervals starting at noon. Anne arrives at the bus stop X minutes after noon, where X is a random variable with distribution function FX(x) = P(X ≤ x) = 0 for x < 0, x2 /3600 for 0 ≤ x ≤ 60, 1 for x > 60. (a) What is the probability that Anne waits less than...
  7. D

    placing data into which distribution?

    Hello all, I have two sets of data, which are divided by a single category. I want to be able to place further observations into one of these distributions, and put a confidence level on which distribution the data falls in. The problem is that I only understand how to do this for...