csat-suneung 2020 Q20

csat-suneung · South-Korea · csat__math-science 4 marks Binomial Distribution Contextual Probability Requiring Binomial Modeling Setup

A coin is tossed 7 times. What is the probability of satisfying the following conditions? [4 points] (가) Heads appears at least 3 times. (나) There is a case where heads appears consecutively.
(1) $\frac { 11 } { 16 }$
(2) $\frac { 23 } { 32 }$
(3) $\frac { 3 } { 4 }$
(4) $\frac { 25 } { 32 }$
(5) $\frac { 13 } { 16 }$

A coin is tossed 7 times. What is the probability of satisfying the following conditions? [4 points]\\
(가) Heads appears at least 3 times.\\
(나) There is a case where heads appears consecutively.\\
(1) $\frac { 11 } { 16 }$\\
(2) $\frac { 23 } { 32 }$\\
(3) $\frac { 3 } { 4 }$\\
(4) $\frac { 25 } { 32 }$\\
(5) $\frac { 13 } { 16 }$

Paper Questions

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