Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uu-Difference-two-means-600-en_uu-Difference-two-means-600-en
   name	uu-Difference-two-means-600-en
   section	Inferential Statistics/Sampling Distributions/Difference two means
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Calculation
   Program
   Language	English
   Level	Statistical Literacy

   Question

   If for two independent samples of 5 people each, the pooled variance equals 20, what is the value of the standard error of the difference between two sample averages?

   
   
   1. FALSE: 2
   2. FALSE: $\sqrt{5}$
   3. TRUE: $\sqrt{8}$
   4. FALSE: $\sqrt{10}$
   
   

   Solution

   $SE=\sqrt{\frac{s_p^2}{n_1}+\frac{s_p^2}{n_2}}=\sqrt{\frac{20}{5}+\frac{20}{5}}=\sqrt{8}$ $SE