Researchers randomly selected 36 children who had been identified as gifted from a large city. The IQ of each child and the IQ of the child's mother were measured. You will perform a statistical analysis to determine if IQs of gifted children tend to be higher than their mothers' IQ on average. The mean difference in IQ (child - mother) was 3.22 points, with a standard deviation of 7.41 points. A dotplot of these differences follows.
-Which scenario in the Theory-Based Inference applet would you use for these data?
A) One proportion
B) One mean
C) Two proportions
D) Two means

Question

Researchers randomly selected 36 children who had been identified as gifted from a large city. The IQ of each child and the IQ of the child's mother were measured. You will perform a statistical analysis to determine if IQs of gifted children tend to be higher than their mothers' IQ on average. The mean difference in IQ (child - mother) was 3.22 points, with a standard deviation of 7.41 points. A dotplot of these differences follows. 
-Which scenario in the Theory-Based Inference applet would you use for these data?
A) One proportion 
B) One mean 
C) Two proportions 
D) Two means

Quizplus · Accepted Answer

The data is a single mean.

Researchers Randomly Selected 36 Children Who Had Been Identified as Gifted