Question 1177277
<pre><font face = "consolas" color = "indigo" size = 3><b>
Hi
Binomial Distribution:  p(does not spoil) = .95 and q(spoil) = .05
n = 15
Using Ti or similarly an inexpensive calculator like a Casio fx-115 ES plus 
P(x = 0) = basically 0
P(x ≤ 12) = .0307
P( x ≥ 9) = 1 - P(x ≤ 8) 1 - .000003 = .999997

Wish You the Best in your Studies.
</font></b></pre>