Question

Q6 a perfect coin is tossed 1000 times in set of 12 (i) how many cases should we expect to get 8 heads and 4 tails (ii)

Answer 1

Answer:

121 Times

Step-by-step explanation:

Probability of Getting Head p = 1/2

Probability of Getting Tail = 1 - p = 1- 1/2 = 1/2  = q

8 heads & 4 Tails

= ¹²C₈ * (1/2)⁸ (1/2)⁴

= ((12 * 11 * 10 * 9) / (4 * 3 * 2)) * (1/2)¹²

= 495 / 2¹²

= 0.121

if tossed 1000 times

then we expect to get 8 heads and 4 tails = 1000 * 0.121

= 121

121 Times