Stat 104 Assignment 7 solution
Total points: 30
Challenge Problem: 6
6.70 (2 points)
(a) Statistically insignificant means that the results were so small that they could have
occurred simply by chance.
(b) Had the effects been large, then the statistical
The exact p-value is .0488.
StatXact output for Exercise 3
KRUSKAL-WALLIS TEST [That the 3 populations are identically distributed]
Statistic based on the observed data :
T(X) = The Observed test Statistic =
Concepts of Statistics
Instructor: Dr. Marcus A. Agustin
Office: SL 1325
Phone: (618) 650-3681
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Office Hours: 1:00-2:00 pm MTWR or by appointment
B = 38 (out of 40), Z = 5.96, one-sided p-value less than .0001.
Comment: Here we are applying continuous data methods to data that are discrete but have a lot of
possible values. In such situations, it can happen that ther
Solution Set to Assignment 3
(Marking scheme: 35 points for questions with 5 bonus points for challenge: Total = 40)
4.6) (1 point)
Using the Applet
After the first 40 tosses, the proportion of heads is 0.38 .
The count of heads is 15 out of 4