Posted by **Krislina** on Saturday, March 2, 2013 at 4:28pm.

The U.S. Census Bureau reported 77% of the U.S population had internet access in 2009. Choosing 3 random individuals find the probability that

a. none of the 3 inidivuals has internet

b. all of the individuals have internet access

c. at least 1 of the 3 individuals has internet access

- statistics -
**Dr. Jane**, Saturday, March 2, 2013 at 4:42pm
.77 have it so .23 don't

None of the 3 have it.

(.23)^3

All have it.

(.77)^3

At least 1 has it means that 1, 2 or 3 have it. It is easier to do the problem in the reverse. If at least 1 has it, the opposite would be none have it. (.23^3)

1 - (.23)^3

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