En bulbs are randomly selected without replacement from a lot of bulbs some of whichare defective.
(a) if we assume that there are an infinite number of bulbs in the lot and5%of themare defective. what is the probability that at least 2 out of the 10 selected aredefective?
(b) if we know that the lot has not infinite but 120 bulbs, and 12 of them are defective, what is the probability that at least 1 out of the 10 selected is defective?

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3