2 Answers

Iyal · Answer 1 · 2018-07-14T13:47:24+0000

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.

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

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

$P=(46)/(162)\approx 0.284$

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

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

$P=(86)/(162)\approx 0.531$

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

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