Question

What is the probability that a person who is older than 35 years has a hemoglobin level between 9 and 11

Answer 1

Answer:

1. The probability that a person who is older than 35 years has a hemoglobin level between 9 and 11 is 0.284.

2. The probability that a person who is older than 35 years has a hemoglobin level of 9 and above is 0.531.

Step-by-step explanation:

Let the number of person who is older than 35 years has a hemoglobin level between 9 and 11 be x.

From the given table it is clear that the total number of person who is older than 35 years is 162.

$76+x+40=162$

$x+116=162$

$x=162-116$

$x=46$

The number of person who is older than 35 years has a hemoglobin level between 9 and 11 is 46.

1.

The probability that a person who is older than 35 years has a hemoglobin level between 9 and 11 is

$P=\frac{\text{Person who is older than 35 years has a hemoglobin level between 9 and 11}}{\text{Person who is older than 35 years}}$

$P=\frac{46}{162}\approx 0.284$

The probability that a person who is older than 35 years has a hemoglobin level between 9 and 11 is 0.284.

2.

Person who is older than 35 years has a hemoglobin level  of 9 and above is

$46+40=86$

The probability that a person who is older than 35 years has a hemoglobin level of 9 and above is

$P=\frac{\text{Person who is older than 35 years has a hemoglobin level of 9 and above}}{\text{Person who is older than 35 years}}$

$P=\frac{86}{162}\approx 0.531$

The probability that a person who is older than 35 years has a hemoglobin level of 9 and above is 0.531.