The quality of each pair of photo detectors produced by the machine in Prob-lem 2.1.6 is independent of the quality of every other pair of detectors.

(a) What is the probability of finding no good detectors in a collection of n pairs produced by the machine?
(b) How many pairs of detectors must the machine produce to reach a probability of 0.99 that there will be at least one acceptable photo detector?

spinning a 1, 2, or 3. option d.

step-by-step explanation: when spinning a number graph up to 4, and aiming for any number less than 3, that automatically eliminates the number 4. now you have two numbers to spin on that are less than 3, but the number 3 is included in this question because it's no greater of an number than itself. i hope this you : )

the answer is  

a.

28 ft2

step-by-step explanation:

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