Recall the data in Question 8.2.9 giving the sizes of 10 gorilla groups studied in the Congo. Is it believable that the true median size, ˜μ, of all such groups is 9? Answer the question by finding the P-value associated with the null hypothesis H0: ˜μ = 9. Assume that H1 is two-sided. (Tabulated on the right is the binomial pdf for the case where n = 10 and p = 1/2.)
MTB > pdf;
SUBC > binomial 10 0.5.
Probability Density Function
Binomial with n = 10 and p = 0.5
x P( X = x )
0………………………………0.000977
1………………………………0.009766
2………………………………0.043945
3………………………………0.117188
4………………………………0.205078
5……………………………… .246094
6………………………………0.205078
7………………………………0.117188
8………………………………0.043945
9………………………………0.009766
10……………………………..0.000977