Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uva-sample-mean-1306-en_uva-sample-mean-1306-en
   name	uva-sample-mean-1306-en
   section	Inferential Statistics/Sampling Distributions/Sample mean
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	2
   p-value	0.5905

   Question

   A pharmaceutical company states that 20% of patients taking a new allergy medication feel drowsy. To verify this statement, 500 randomly selected people are asked to take this medication. We measure X is the number of people who feel sleepy. The probability that 110 or more people in the sample feel sleepy can be written as:

   
   
   1. FALSE: P(X ≥ 0.20).
   2. FALSE: P(X ≥ 0.22).
   3. FALSE: P(X ≤ 0.22).
   4. TRUE: P(X ≥ 110).
   5. FALSE: P(110 ≤ X ≤ 550).
   
   
   1. P(X ≥ 0.20)…: Incorrect
   2. P(X ≥ 0.22)…: Incorrect
   3. P(X ≤ 0.22)…: Incorrect
   4. P(X ≥ 110)…: Correct
   5. P(110 ≤ X ≤ 550)…: Incorrect