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Q.

Following are the ages (in years) of 360 patients, getting medical treatment in a hospital: One of the patients is selected at random. The probability that his age is 30 year or more but less than 40 years is ____.


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Detailed Solution

Following are the ages (in years) of 360 patients, getting medical treatment in a hospital: One of the patients is selected at random. The probability that his age is 30 year or more but less than 40 years is 0.1667.
Question ImageGiven the ages of 360 patients.
Number of patients whose age is 30 year or more but less than 40 years = 60
And, total number of outcome = 360
Now, the probability that his age is 30 year or more but less than 40 years is,
= Number of patients whose age is 30 year or more but less than 40 years Total number of outcomes = 60 360
= 1 6 =0.16667
Hence, the probability is 0.1667.
 
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