On the leeward side of the island of Oahu in the small village of Nanakuli, about 80% of the residents are of Hawaiian ancestry (The Honolulu Advertiser). Suppose you fly to Hawaii and visit Nanakuli. What is the probability that you will meet at most three people to produce an Hawaiian person? P ( X 3 ) = ( 0.20 ) 3 P ( X 3 ) = 1 ( 0.80 ) 3 P ( X < 3 ) = 1 ( 0.20 ) 3 P ( X 3 ) = ( 0.20 ) 4 P ( X 3 ) = 1 ( 0.20 ) 3 .

1. One way to evaluate the validity of clusters is to see if they come from a balanced dataset.
T F
We may get 100% recall even with a naive model.
T F
One marketing application of association rules is to decide on product placement strategy.
t f
The confidence of a rule is defined as the probability of the occurrences of the results and the
condition.
t f