bell-shaped curve

  1. C

    Create bell curve with a discrete variable

    Hello everyone, I like stats but I must warn you that I am far from an expert so please forgive me if my question is a bit basic :). My issue is the following: I ran a simple randomized experiment on a population of 151,173 users. The users were exposed to a display banner on the internet...
  2. O

    Statistics- Find Critical Value(s); Bell-Shaped Curve

    Given problem- Find the critical value (or values) for the following and illustrate each using the Bell-Shaped Curve: Numerous example such as- a = alpha 1) a = 0.05, two-tailed test 2) a = 0.01, left-tailed test 3) a = 0.005, right-tailed test Where I'm stuck- I believe the solution...