level of significance

  1. L

    0.05 or 0.01 level of p for multiple comparisons?

    I wrote a scientific paper measuring ovarian volumes after two different surgical procedures performed on either ovary. The measurements were at three different time-points (1, 3 and 6 months). Evaluated patient numbers were different at the three time-poimts since some of them got pregnant and...
  2. A

    Goodness-of-fits tests.

    I honestly have no idea where to even start in this assignments. Any type of ell would be greatly appreciated. I can easily do the problems given in different forms but word problems have never been my strongest. According to the following distribution (digit, probability): (1, 0.301) (2...
  3. C

    Permutation test: Level of significance

    Dear all, I am currently reading about permutation/randomization tests and have some difficulties to understand why they are exact. More precisely, I consider two groups of independent random variables with means \mu_1 and \mu_2 and variances \sigma^2_1 and \sigma^2_2, which are assumed to be...
  4. S

    Hypothesis Testing for Standard Deviation

    Hello! Attempting to complete this problem: -- The observations (volume in m^3/ha) of 10 prism plots from a given forest type are summarized as follows: sample mean = 420 m^3/ha "10" on top of the ∑ and "i-1" below the sigma, with "x^2" beside it = 1,778,400 (m^3/ha)^2 Using the...