stat

  1. L

    need help with my analysis

    am checking the impact of the different type of boats on the dolphins behaviour and i have two type of variables first is boat type ( fishing , recreation , cargo etc ) and i have the dolphins behaviour which divided into 4 type of behaviour ( rest , social , travel , feed) i need some help...
  2. M

    Binomial Theorem

    I'm trying to do this following below in R: The Harriet Hotel in downtown Boston has 100 rooms that rent for $150 per night. It costs the hotel $30 per room in variable costs (cleaning, bathroom items, etc.) each night a room is occupied. For each reservation accepted, there is a 5% chance...
  3. L

    Twins raised together and twins raised apart

    Greetings All, I am examining smoking behavior in a sample of twins raised apart and together.I have repeated measures at different time points asking participants if they smoke or not. I also have a question about whether the participant grew up in a household where parents smoked. My...
  4. M

    Statistical method to compare two experiments

    I have two data from biological experiment where two types of cells were measured. For each cell the data about composition of the membrane where extracted under different condition of the experiment (repeated 3 times), composition is in percentage, so sum of each column is 100%. I would...
  5. S

    Help***SAS - Fill missing value with the last non missing value variable

    Hi, I wanted to fill missing value with the last non missing value variable. +----------+--------+-------+ | Variable | Level | Value | +----------+--------+-------+ | | men | 10 | |sexe | female | 20 | | | 0-20 | 5 | |...
  6. C

    Mean Residual Life

    Hi, I've been tasked with solving the mean residual life given the density function f(x) and the survival function S(x) I think mean residual life can be calculated by: mrl(x)=[∫(t-x)f(x)dt]/S(x)] or mrl(x)=∫S(t)dt/S(x) the problem is, f(x) contains the gamma function and I don't...
  7. K

    HELP!!! Chi-Square Tests

    What is the difference between Homogeneity of proportions across two or more groups, Test of independence, and Goodness of fit test? Also, how would you know which test was used if all you are given is X-squared=31.3695, df=2, p-value=1.542e-07? And based on those outputs, how do you...
  8. J

    How to Determine if 2 variables are dependent?

    I'm trying to figure out whether or not citation flow and trust flow are independent of each other (here is the article containing the data: http://www.3ders.org/articles/20120514-which-company-in-3d-printing-world-has-better-link-profile-quality.html). Is there a certain test or method that can...
  9. T

    Need Help in STAT Project

    Please help me I have this project for Stat in Excel. I need to answer the following questions in the the attached worksheet. I have completed questions 1 - 4, But I am having hard time figuring out question 5 - 9. Please help me I am desperate. thank you. The College Gift Shop wants to have...