Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_vufgb-confidenceintervals-027-en_vufgb-confidenceintervals-027-en
   name	vufgb-confidenceintervals-027-en
   section	Inferential Statistics/Confidence Intervals, Inferential Statistics/Sampling Distributions
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Calculation
   Program
   Language	English
   Level	Statistical Literacy

   Question

   A researcher wants to know what percent of elementary school children have ever smoked. He draws a random sample of 240 children. It turns out that in the sample 30 children have ever smoked. What is the 95% confidence interval for the population parameter?

   
   
   1. TRUE: 0.083 < $\pi$ < 0.167
   2. FALSE: 0.124 < $\pi$ < 0.126
   3. FALSE: 0.458 < $\pi$ < 0.542
   4. FALSE: 0.104 < $\pi$ < 0.146
   
   
   1. Correct
   2. Incorrect
   3. Incorrect
   4. Incorrect