Question

select the correct answer from each drop - down menu.

hemoglobin level	age - less than 25 years	age - 25 - 35 years	age - above 35 years	age - total
between 9 and 11	49	52	46	147
above 11	69	44	40	153
total	139	128	162	429

based on the data in the two - way table, the probability of being 25 - 35 years old given a hemoglobin level above 11 is 0.29. the probability of being 25 - 35 years old is drop - down with 0.25, 0.3, 0.36. being 25 - 35 years old and having a hemoglobin level above 11 drop - down dependent on each other.

Explanation:

Step1: Calculate P(25-35 years old)

Find total 25-35 year olds divided by overall total.
$\frac{128}{429} \approx 0.30$

Step2: Compare probabilities for dependence

Check if P(25-35 | above 11) ≠ P(25-35).
Given P(25-35 | above 11) = 0.29, and 0.29 ≠ 0.30, so they are dependent.

Answer:

The probability of being 25-35 years old is 0.3
Being 25-35 years old and having a hemoglobin level above 11 are dependent on each other.