Answer:
The answer is "Option a".
Step-by-step explanation:
Using the binomial distribution:
In this the maximum value which is significantly low, 
, and the minimum value which is significantly high, 
, that is equal to:
I believe the answer is 2(15t).
Answer: 0.1
Step-by-step explanation: you only need to add zero to the first value,
for example if you have 1/10, you add zero, getting the next equation
10/10 if you add a zero to value you can add a zero to the result getting the following result
10/10=0. in this point both values are divisible
and 10 between 10 is equal to 1
as you finish add zeros you can add a point and after the 1 getting this result
1/10 = 0.1
defective : working = 1/15 ( x20 ) 20/300
so the answer is 20 light bulbs
