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Solve the Problem Compute the Empirical Probability That at Most Two Heads Occur

Question 303

Multiple Choice

Solve the problem.
-Three coins are tossed 80 times and the number of heads is observed.  Outcome  no heads  one head  two heads  three heads  Frequency 4512230\begin{array}{l|cccc}\text { Outcome } & \text { no heads } & \text { one head } & \text { two heads } & \text { three heads } \\\hline \text { Frequency } & 45 & 12 & 23 & 0\end{array}

Compute the empirical probability that at most two heads occur.


A) 572\frac { 57 } { 2 }
B) 34\frac { 3 } { 4 }
C) 1
D) 718\frac { 7 } { 18 }

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