No. of trials for P>0.99 of at least one basket ball success

[Pushoam]

Homework Statement

Homework Equations

The Attempt at a Solution

Probability of getting no success in one trial $P( \bar p) = 1 – P (p) = 0.25$

Probability of getting no success in n trials $P_n( \bar p) = (1 – P (p) )^n= (0.25)^n$

Probability of getting one success in n trials $P_n( 1p) = 1-(1 – P (p) )^n=1- (0.25)^n$

We have,

$1- (0.25)^n \geq 0.99 \\ n \geq 3.3$

So, necessary n = 4
Is this correct?

 

[BvU]

You learn quickly !
I'd say yes, correct.