Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_vufsw-normal-1075-en_vufsw-normal-1075-en
   name	vufsw-normal-1075-en
   section	distributions/continuous/normal
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	conceptual
   Program	NA
   Language	English
   Level	statistical literacy

   Question

   A research on the time that youngsters spend on social media (measured in minutes per day) is carried out using a random sample (N=300). In this sample, the mean equals 192 minutes per day and the standard deviation 30 minutes per day.

   The variable of interest follows a normal distribution. According to the Empirical Rule, we can say that approximately…

   
   
   1. TRUE: 68% of the observations are between 162 and 222.
   2. FALSE: 68% of the observations are between 188 and 196.
   3. FALSE: 95% of the observations are between 182 and 200.
   4. FALSE: 95% of the observations are between 170 and 214.
   
   

   Solution

   Language
   English

   Levels of Difficulty
   Medium

   M&T BIS
   Default value

   M&T Descriptive statistics
   Default value

   M&T Normal distribution
   Default value

   
   
   1. True
   2. False
   3. False
   4. False