Construct the discrete probability distribution for the random variable described. Express the probabilities as simplified fractions.
The number of tails in 3 tosses of a coin.

Answer

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Answer

The probability of getting 3 tails is $\frac{1}{8}$

Steps

Step 1 ：The probability of getting 0 tails is $\frac{1}{8}$

Step 2 ：The probability of getting 1 tail is $\frac{3}{8}$

Step 3 ：The probability of getting 2 tails is $\frac{3}{8}$

Step 4 ：The probability of getting 3 tails is $\frac{1}{8}$