Q:

Based on the data in the two-way table, the probability of being older than 25 years and having a hemoglobin level above 11 isA:0.29 B:0.34C:0.54The probability of having a hemoglobin level above 11 is .A:0.25 B:0.3 C:0.36Being older than 25 years and having a hemoglobin level above 11 A.areB.are notdependent on each other.20 points :3

Accepted Solution

A:
Based on the data in the two-way table, the probability of being older than 25 years and having a hemoglobin level above 11 is
(154-69)/(429-139)
=85/290
=0.2931~0.29
Answer: A. 0.29

The probability of having a hemoglobin level above 11 is 
P(H>11)
=154/429
=0.35897~0.36
Answer: C:0.36


Being older than 25 years and having a hemoglobin level above 11 
Are not dependent on each other because w have not been told about any factors that were included in selection of sample. 
Answer: B.are not