Question

select the correct answer from each drop - down menu

hemoglobin level	age
less than 9	21	32	76	129
between 9 and 11	49	52	45	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
the probability of being 25 - 35 years old is
being 25 - 35 years old and having a hemoglobin level above 11 dependent on each other

reset next

Explanation:

Step1: Find conditional probability

$P(\text{25 - 35}|\text{Above 11})=\frac{44}{153}$ (number in 25 - 35 and above 11 over total above 11)

Step2: Find marginal probability

$P(\text{25 - 35})=\frac{128}{429}$ (total in 25 - 35 over grand - total)

Step3: Check dependence

If $P(A|B)
eq P(A)$, events are dependent. Here they are.

Answer:

1. $\frac{44}{153}$
2. $\frac{128}{429}$
3. Are