Probability දන්න කෙනෙක්ගෙන් උදව්වක්

[DeKay]

Probability දන්න කෙනෙක්ගෙන් උදව්වක්

A coin with P (Head) =0.6 is tossed twice. What is the probability that at least one head occurs?

meka hadanne kohomada? danna kenek kiyannako

 

[peter001]

Tree diagram ekakin puluwn bn

(Head){0.6 (H,H) 0.6x0.6=0.36
(Head){0.6
(Tail){0.4 (H,T) 0.6x0.4=0.24

(Head){0.6 (T,H) 0.4x0.6=0.24
(Tail){0.4
(Tail){0.4 (T,T) 0.4x0.4=0.16

probability of at least one head occurs=0.36+0.24+0.24=0.82

 

[buddhikakgsl]

Tree diagram ekakin puluwn bn



probability of at least one head occurs=0.36+0.24+0.24=0.82

me method eka hari. But ekathuwa weradila machan. eka .84 wenna one.
oya gaana binomial expansion ekenuth hadanna puluwan.

 

[MINT_51]

1-0.4*0.4=0.84