If a couple were planning to have three​ children, the sample space summarizing the gender outcomes would​ be: bbb,​ bbg, bgb,​ bgg, gbb,​ gbg, ggb, ggg.
a. construct a similar sample space for the possible health outcomes​ (using h for healthy and s for sick​) of two children.
b. assuming that the outcomes listed in part​ (a) were equally​ likely, find the probability of getting two healthy children.
c. find the probability of getting exactly one healthy child and one sick child.

Respuesta :

Solution:

we havebeen asked to write

a. construct a similar sample space for the possible health outcomes​ (using h for healthy and s for sick​) of two children.

Sample space[tex]=\left \{HH, HS,SH,SS\right \}[/tex]

Where S=Sick, H=Healthy

b. assuming that the outcomes listed in part​ (a) were equally​ likely, find the probability of getting two healthy children.

From the sample sapce its clear that

Total number of outcomes[tex]=4[/tex]   ([tex]\left \{HH, HS,SH,SS\right \}[/tex])

Favourable Outcome[tex]=1[/tex]        ([tex] {HH}[/tex])

Hence the Probability[tex]=\frac{1}{4}\\[/tex]

c. find the probability of getting exactly one healthy child and one sick child.

From the sample space in part a, its clear that

Total number of possible out come [tex]=4[/tex]          ([tex] \left \{HH, HS,SH,SS\right \}[/tex])

Favourable outcome[tex]=2[/tex]                                 ([tex] { HS,SH}[/tex])

Hence the Probability[tex]=\frac{2}{4}=\frac{1}{2}\\[/tex]