Question

estion 3:- An unbiased coin is tossed 10 times, then probability of getting exactly 4 heads is
0.377
0.623
0.35
0.205​

Answer 1

Answer:

USE binomial distribution to solve such kind of questions.

coin is tossed 10 times..our success event is getting head denoted by p

so p= 1/2

q= failure event i.e not getting head =1-(1/2)= 1/2

we want four heads i.e four successes

use formula and fit the parameters into it.

nCr *p^r * q^(n-r)

here n=10 p=1/2 r=4 q=1/2

plugging these values

10C4 * (1/2)^4 * (1/2)^6 = .205

Step-by-step explanation:

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