Exam 1

1. Metainformation

   Tag	Value
   file	Distributions_uva-normal-1369-en_uva-normal-1369-en
   name	uva-normal-1369-en
   section	Distributions/Continuous/Normal
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2.281
   p-value	0.4915

   Question

   88% of boys in high schools had a side job during the summer. For girls at the same schools, the percentage is 82%. A researcher takes two random samples: one among boys and the other among girls. Each sample contains 500 students. What is an approximate distribution of the difference between the proportions of these two samples?

   
   
   1. FALSE: It is a normal distribution with a mean of 0.06 and standard error of 0.017.
   2. FALSE: It is a normal distribution with a mean of 0.06 and standard error of 0.018.
   3. TRUE: It is a normal distribution with a mean of 0.06 and standard error of 0.023.
   4. FALSE: It is a normal distribution with a mean of 0.06 and standard error of 0.035.
   
   
   1. It is a normal distribution with a mean of 0.06 and standard error of 0.017…: Incorrect
   2. It is a normal distribution with a mean of 0.06 and standard error of 0.018…: Incorrect
   3. It is a normal distribution with a mean of 0.06 and standard error of 0.023…: Correct
   4. It is a normal distribution with a mean of 0.06 and standard error of 0.035…: Incorrect