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  • Find the probability that a number selected at random from the numbers will be their mean.

Find the probability that a number selected at random from the numbers 3, 4, 4, 4, 5, 5, 6, 6, 6, 7 will be their mean.

 

 
 
 
 
 

Answers (1)

Given \rightarrow3, 4, 4, 4, 5, 5, 6, 6, 6, 7

Mean of the number =\frac{3+4+4+4+5+5+6+6+6+7}{10}=\frac{50}{10}=5

Now we know the mean of the given number is 5

And no of 5 s in the given series n(A)=2

Total no of outcomes in the given series n(T)=10

The probability that the chosen number is mean, P(A)=\frac{n(A)}{n(T)}

P(A)=\frac{2}{10}=\frac{1}{5}

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Safeer PP

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