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What’s the probability that the 5 balls will be pink?

Whats The Probability That The 5 Balls Will Be Pink class=

Sagot :

Given:

The number of pink balls in the urn = 8.

The number of green balls in the urn = 6

The number of balls randomly drawn from the urn =5

Required:

We need to find the probability of selecting 5 balls that all are pink.

Explanation:

The balls are replaced after selection.

The sample space = the total number of balls in the urn= 8+6

[tex]n(S)=14[/tex]

Let A be the event of selecting a pink ball.

The favourable outcomes = The number of pink balls = 8

[tex]n(A)=8[/tex]

The probability of selecting 5 balls from an urn that all are pink,

[tex]=\frac{n(A)}{n(S)}\times\frac{n(A)}{n(S)}\times\frac{n(A)}{n(S)}\times\frac{n(A)}{n(S)}\times\frac{n(A)}{n(S)}[/tex][tex]=\frac{8}{14}\times\frac{8}{14}\times\frac{8}{14}\times\frac{8}{14}\times\frac{8}{14}[/tex][tex]=\frac{32768}{537824}[/tex][tex]=0.0609269947[/tex][tex]=0.061[/tex]

Final answer:

The probability that the 5 balls will be pink is 0.061.