statistical significance

I am doing a study to determine the efficacy of a drug. The efficacy of the drug is measured as the proportion of patients with HbA1c (diabetes control level)<7%. With the help from Talks Stats, I was able to determine a sample size of 73, where p = 95%, t (CI) = 1.96 (95%) and m =5% (using...

Hello, My first post here. I am analyzing a marketing survey. A snapshot of a subset of the data is attached. I am interested in finding out whether respondents who do not know company 2 are generally less aware or not. I have developed an awareness measure and calculated for all respondents...

According to an analysis of recently released census data, on average, women earn less than two-thirds as much as men. A sample of ten men and ten women was selected from a specific management position in ten different U.S. Corporations, and the annual salary for each individual was recorded...

My hope is that people can chip away at the questions raised in the article. All responses are welcome! I have been spending a bit of time trying to teach myself various univariate and multivariate statistical techniques. I would really appreciate a "one stop shop" with a general overview of...

Hi, I have a question on a pset that told me to regress Consumption on the log Income which was fine. Then it asked me "Using the results from part 3, calculate the elasticity of Consumption with respect to Income. is this impact statistically significant?" Now, I know that I can find...