2-1. Let *a* and *b* denote a part above and below the specification, respectively.

*S* = {*aaa*, *aab*, *aba*, *abb*, *baa*, *bab*, *bba*, *bbb*}

2-3. Let *a* denote an acceptable power supply.

Let *f*, *m*, and *c* denote a power supply that has a functional, minor, or cosmetic error, respectively.

*S* = {*a*, *f*, *m*, *c*}

2-5. Let *y* and *n* denote a web site that contains and does not contain banner ads.

The sample space is the set of all possible sequences of *y* and *n* of length 24. An example outcome in the sample space is *S* = {*yynnynyyynnynynnnnyynnyy*}.

2-7. *S* is the sample space of 100 possible two digit integers.

2-9. *S* = {0,1,2,...,1*E*09} in ppb.

2-11. *S* = {1.0,1.1,1.2,...14.0}

2-13. *S* = {0,1,2,...,} in milliseconds.

2-15.

2-17. Let *c* and *b* denote connect and busy, respectively. Then *S* = {*c*, *bc*, *bbc*, *bbbc*, *bbbbc*, …}.

2-19. a)

b)

c)

d)

e)

2-21. a) Let

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