He currently researches and teaches economic sociology and the social studies of finance at the University of Lucerne in Switzerland.Adam's new book ... the t-test takes a sample from each ...

Central Limit Theorem: A sampling distribution of the mean is approximately normally ... Do problem 7.26 (p. 267 in the textbook). Do problem 7.27 (p. 267 in the textbook). A Gallup poll found that ...

The common assumptions made when doing a t-test include those regarding the scale of measurement, random sampling, normality of data distribution, adequacy of sample size, and equality of variance ...