Question

a coin is tossed 1000 time's with the following frequencies head 455 tail 545

Answer 1

probability of head = 455/1000= 91/200
probability of tail = 545/1000= 109/200

Answer 2

Answer:

Given :-

Coin tossed = 1000 times

Head - 455

Tail - 545

Solution :-

The probability of head =

$\frac{no \: of \: heads}{total \: no \: of \: trials}$

(Note :- P(E) = head , P(F) = tail )

P(E) =

$\frac{455}{1000}$

= 0.455

Similarly ,

The probability of tail =

$\frac{no \: of \: tails}{total \: no \: of \: trails \: }$

P(F) =

$\frac{545}{1000}$

= 0.545

P(E) + P(F) = 0.455 + 0.545 = 1