lol probability question (1 Viewer)

[wandering17]

13) The probability of a pair of small parrots breeding an albino bird is 2/33. If they lay three eggs, find the probability of the pair
a) Not breeding any albinos... its not 31/33?
b) having all three albinos <-- im fine with b, need help with a and c tho..
c) Breeding at least one albino

Thanksssssss

 

[Kurosaki]

a. For each egg, the probability of the offspring not being an albino is . As there are 3 eggs, the probability of none of them being albinos would be , since none of the eggs can have albinos inside.

c. Just subtract the probability of having 0 albinos from 1, since they are mutually exclusive events.

 

[faisalabdul16]

<img src="http://latex.codecogs.com/gif.latex?a)&space;(\frac{31}{33})^{3}=&space;0.83(2d.p)&space;\\&space;\\&space;\\&space;c)&space;1-&space;(\frac{31}{33})^{3}=&space;0.17&space;(2&space;d.p)" title="a) (\frac{31}{33})^{3}= 0.83(2d.p) \\ \\ \\ c) 1- (\frac{31}{33})^{3}= 0.17 (2 d.p)" />

 

[wandering17]

<img src="http://latex.codecogs.com/gif.latex?a)&space;(\frac{31}{33})^{3}=&space;0.83(2d.p)&space;\\&space;\\&space;\\&space;c)&space;1-&space;(\frac{31}{33})^{3}=&space;0.17&space;(2&space;d.p)" title="a) (\frac{31}{33})^{3}= 0.83(2d.p) \\ \\ \\ c) 1- (\frac{31}{33})^{3}= 0.17 (2 d.p)" />

What do i do if the answer in the back of the book is in a fraction? & its not coming up as a fraction of my calc...

 

[Kurosaki]

What do i do if the answer in the back of the book is in a fraction? & its not coming up as a fraction of my calc...

Use the calculator to find out the value of the fraction and see if they're identical values for as many decimal places as the calculator can give.

 

[wandering17]

Use the calculator to find out the value of the fraction and see if they're identical values for as many decimal places as the calculator can give.

can i leave the answer in a percentage? if the answer is the same as the back of the book, like is it vital i put it in a fraction?