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.
What is probability?
Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty.
Given
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
116+x = 162
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 = 46/162 = 0.62
The probability that a person who is older than 35 years has a hemoglobin level between 9 and 11 is 0.284.
Person who is older than 35 years has a hemoglobin level of 9 and above is 40+46 = 86
The probability that a person who is older than 35 years has a hemoglobin level of 9 and above is
P = 82/162 = 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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