Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uu-t-statistic-802-en_uu-t-statistic-802-en
   name	uu-t-statistic-802-en.Rmd
   section	Inferential Statistics/NHST/Test statistic/t-statistic
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Case
   Program
   Language	English
   Level	Statistical Literacy

   Question

   Isa wishes to compare the prices of apartments in two neighboring towns using a significance level of 5%. She takes a random sample of 12 apartments in town A and calculates the average price of these apartments (M = 850, SD = 85). She repeats this for 15 apartments in town B (M = 825, SD = 75). Let μA represent the true average price of apartments in town A and μB the average price in town B.

   Which of the following distributions is the correct comparison distribution for this problem?

   
   
   1. FALSE: A normal distribution with a mean of 0 and a standard deviation of 1.
   2. FALSE: A normal distribution with a mean of 12 and a standard deviation of 15.
   3. FALSE: A t-distribution with 14 degrees of freedom
   4. TRUE: A t-distribution with 25 degrees of freedom
   
   

   Solution

   A t-distribution with 25 degrees of freedom

   
   
   1. This answer is incorrect.
   2. This answer is incorrect.
   3. This answer is incorrect.
   4. This answer is correct.