Question

plz help in above attachment​

Answer 1

$\hline\begin{array}{ ||c||c||c||c||c||} \underline{\underline{ \footnotesize \tt{Outcomes}}}& \underline{\underline{ \footnotesize \tt{3 \: heads(HHH)}}}& \underline{\underline{ \footnotesize \tt{2 \: heads(HHT)}}}&\underline{\underline{ \footnotesize \tt{1 \: heads(HTT)}}}&\underline{\underline{ \footnotesize \tt{No head(TTT)}}}\\\underline{\underline{ \footnotesize \tt{Frequency}}}&\underline{\underline{ \footnotesize \tt{23}}}&\underline{\underline{ \footnotesize \tt{72}}}&\underline{\underline{ \footnotesize \tt{77}}}&\underline{\underline{ \footnotesize \tt{28}}}\end{array}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\purple \bullet\footnotesize \tt{ \: HHH \: stands \: for \: } \purple{ Heads \: Heads \: Heads}$

$\purple \bullet\footnotesize \tt{ \: HHT \: stands \: for \: } \purple{Heads \: Heads \: Tails}$

$\purple \bullet\footnotesize \tt{ \: HTT \: stands \: for \: } \purple{Heads \: Tails \: Tails}$

$\purple \bullet\footnotesize \tt{ \: TTT \: stands \: for \: } \purple{Tails \: Tails \: Tails}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\tt\purple{Solution:-}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\footnotesize \tt{Probability \: of \: getting \:2 \: heads = \frac{No. \: of \: times \: 2 \: heads \: come \: up}{No. \: of \: times \: coin \: tossed \: up} }$

$\footnotesize \tt{Probability \: of \: getting \:2 \: heads = \frac{72}{200} }$

$\footnotesize \tt{Probability \: of \: getting \:2 \: heads = \cancel\frac{72}{200} }$

$\footnotesize \tt{Probability \: of \: getting \: 2 \: heads = \frac{9}{25} }$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\footnotesize \tt{Probability \: of \: getting \:at \: least \: 2 \: heads = \frac{No. \: of \: times \: at \: least \: 2 \: heads \: come \: up}{No. \: of \: times \: coin \: tossed \: up} }$

$\footnotesize \tt{Probability \: of \: getting \:at \: least \: 2 \: heads = \frac{23 + 72}{200} }$

$\footnotesize \tt{Probability \: of \: getting \:at \: least \: 2 \: heads = \frac{95}{200} }$

$\footnotesize \tt{Probability \: of \: getting \:at \: least \: 2 \: heads = \cancel\frac{95}{200} }$

$\footnotesize \tt{Probability \: of \: getting \:at \: least \: 2 \: heads = \frac{19}{45} }$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\footnotesize \tt{Probability \: of \: getting \:at \: most \: 2 \: heads = \frac{No. \: of \: times \: at \: most\: 2 \: heads \: come \: up}{No. \: of \: times \: coin \: tossed \: up} }$

$\footnotesize \tt{Probability \: of \: getting \:at \: most \: 2 \: heads = \frac{72 + 77 + 28}{200} }$

$\footnotesize \tt{Probability \: of \: getting \:at \: most \: 2 \: heads = \frac{177}{200} }$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

Please swipe the ans from left to right