1. O

    Null hypothesis reject H0 conclusion

    Please help me answer this question F=13.2 P= 0.003 what is tested reject H0? conclusions:
  2. S

    Is these Negative binomial distributions?

    Hi. Are these question the same(except the parameters of course) : First - What's the number of trials needed until having at least 1 defective product, with a probability >= 85%, with pDef = 0.03. Second - What's the number of trails needed until having at least 5 defective product, with a...
  3. D

    Statistically significant difference between distributions only knowing the mean and std dev?

    I have 3 specimens (A, B & C) and 5 sets of observations from A & B but only 4 from C. Each observation has been reported as a mean & a standard deviation. I do not have access to the underlying data. I am curious about whether the samples are statistically different from each other as far as...
  4. J

    Using Apache Commons T Distribution cumulative probability to find p given DF and t Value

    [org.apache.commons.math3.distribution.TDistribution] Hello, I am writing a program for statistics and am don't have a very in depth knowledge of p value; I understand what it is so maybe it is that I don't understand cumulative probability and how it gets me a T Value. I've only taken...
  5. F

    Comparing Distributions of Datasets

    I've been asked to find a method to best compare the distribution of a number datasets that have small sample sizes. Bonus points for a solution/result that is in a scale of 0-1, i.e. a distribution approaching 1 is bordering on perfectly unequal and a distribution approaching 0 is bordering on...
  6. G

    Generalization of urn problem

    While simple urn problems - given x green and y black balls, whats the probability if we take 6 that 2 will be black etc. are easily solvable with hypergeometric and binomial distribution. Is there a distribution that solves it a general case for example: Given 1000 blue, 1200 green, 2000 red...
  7. L

    Proof of Kalman filter related lema

    Hi... Can you please provide a proof of the formula given on the attached image?
  8. A

    Scoring at least once out of ten attempts

    A football player has the chance of 0.14 to score (single kick). If he kicks the ball 10 times, what is his chance of scoring at least once? Can you please also help me understand the methodology behind the answer? Many Thanks, Assaf.
  9. R

    Estimating the Average and Standard Deviation with Missing Data

    I need a way to shows me how the parameters of PDF, log-normal in this case, can be estimated based on a set with missing data points at the tail end of a sample. For example, Consider we had 20 numbers with specified μ and σ, and then missed two largest number of them. How do we can estimate...
  10. hanialbarni

    How can i check from this table if data normally distrubtion or not ?

    Hello How can I check from this output if data normally distribution or not ?
  11. A

    event time span analysis

    Hi, I want to make an analysis which exhibit user events in the game according to his cumulative play time The problem, every user has different events. For example, A user enter the game and reached to level 2 and than leaved the game B user enter the game and reached to level 4 and...
  12. L

    normalization of distribution of an interval variable with non normal distribution

    hi , when an interval variable has not normal distribution , can we always be able to use the compute command in spss for transforming this variable by LG10 or SQRT for normalization of distribution ? thanks for your help