(12ab)(3t) = (12 · 3)(abt) = 36abt
Answer:
(a) 71.00%
(b) 63.00%
Step-by-step explanation:
No optional features = 0.29
One feature = 0.34
Two features = 0.37
(a) The probability that an order requests at least one optional feature is 100% minus the probability of an order requesting no optional features:

(b) The probability that an order does not request more than one optional feature is 100% minus the probability of an order requesting two optional features:

Step-by-step explanation:
1a. Just add both of them.

1b. We just subtract both of the functions.


1c.


1d.
