200 individuals from an African village were asked how many times they were vaccinated. Responses: 17 were never vaccinated, 30 were once, 58 were twice, 51 were three times, 38 were 4 times and 7 were 5 times. What is the probability that a randomly chosen person out of this 200 is vaccinated 3 times.

The probability is  

Step-by-step explanation:

From the question we are told that

    The sample size is  n =  200

     The number that were never vaccinated is   k =  17  

     The number that were vaccinated once is  m =  30

     The number that were vaccinated twice is  p =  58

      The number that were vaccinated three times  is q = 51

      The number that were vaccinated four times r = 38

      The number that were vaccinated five times s = 7

Generally  the probability that a randomly chosen person out of this 200 is vaccinated 3 times is mathematically represented as

=>      

=>      

the answer is d

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