Question

If X denotes number of boys born in a series of 30
births with the probability that the birth being a boy
is 0.51, the probability distribution of X is​

Answer 1

Justification of statement is as follows

• Sex determination depends upon the presence of sex chromosomes. There exists two types of sex chromosomes namely X and Y chromosome.

• Females carry XX sex chromosomes while males carry XY chromosome. X chromosome from father results in girl child while Y chromosome from father results in boy child.

• Hence, their exists 50% chance of fertilization of X carrying ovum(from mother), by sperm carrying X or Y chromosome(from father). Thus, the given statement is justified.