*see attachment for the diagram of the two box plots referred to here.
Answer:
2 inches
Step-by-step explanation:
The median of a box plot is the data value that lies exactly where the vertical line divides the box into two.
Therefore:
Median for Class 1 = 17 inches
Median for class 2 = 15 inches
The difference in the medians of both box plots = 17 - 15 = 2 inches
Answer: (103.74,112.06)
Step-by-step explanation:
The confidence interval for population mean is given by :_
Given : Sample size : n= 50
Sample mean :
Standard deviation :
Significance level :
Critical value :
Then the 95% confidence interval for the student IQ in the school will be :-
Hence, the 95% confidence interval for the student IQ in the school= (103.74,112.06)