Question

The table to the right lists probabilities for the corresponding numbers of girls in three births. What is the random variable, what are its possible values, and are its values numerical? Number of girls x P[r) 0.125 0.375 0.375 0.125 Choose the correct answer below O A. The random varlable is Pix). which is the probability of a number of girls in three births. The possible vales of Pix) are 0.125 and 0 375 The values of the random value P(x) are numerical ○ B. The random variable is x which is the number of girls itheee births The possble values of x are 0. 1, 2 and 3 The values of the random value x are numerical O C. The random variable is x. which is the number of girls in theee births. The possible values of x are 0, 1,2, and 3 The values of the random value x are not numerical D. The tandem variable is P(x), which is the prot abley of a number od g utroo births The possble valm of Pp) are 125 and 0 3rs The values onora dem vak" PO) are not umerical.

Answer 1

Solution :

$\mathrm{B.\quad\:The\:random\:variable\:is\:\:}x,\mathrm{\:which\:is\:the\:number\:of\:girls\:in\:three\:births.\:The\:possible\:values\:of\:\:}x\mathrm{\:\:are\:\:0,\:1,\:2,\:\:and\:\:3.\:\:The\:values\:\:of\:the\:random\:value\:\:}x\mathrm{\:\:are\:numerical.}$