A company manufactures eyeglasses for different retailers. In March 2010, they tested to see how many defective lenses they made, and there were 15.3% defective lenses due to scratches. Suppose the company examined twenty eyeglasses. Round your answers to four decimal places, if necessary.
Find the probability that
None are scratched.
P(x = 0) =
All are scratched.
P(x = 20) =
At least fourteen are scratched.
P(x ≥14) =
At most twelve are scratched.
P(x ≤ 12) =
At least six are scratched.
P(x ≥ 6) =