Posted by **mary** on Thursday, November 10, 2011 at 5:18pm.

This week we practice with Binomial Distribution.

You can use Appendix Table E or Excel Function Binomdist.

About 30% of adults in United States have college degree.

(probability that person has college degree is p = 0.30).

If N adults are randomly selected, find probabilities that

1) exactly X out of selected N adults have college degree

2) less than X out of selected N adults have college degree

3) greater than X out of selected N adults have college degree

Choose your numbers for N and X (portion of N).

- stats -
**Anonymous**, Wednesday, October 24, 2012 at 7:17pm
About 30% of adults in United States have college degree.

(Probability that person has college degree is p = 0.30).

If n adults are randomly selected, find probabilities that:

1) Exactly 24 out of selected 50 adults have college degree

=BINOMDIST(24,50,.30,FALSE) = .0032

2) Less than 36 out of selected 75 adults have college degree

=BINOMDIST(35,75,.03,TRUE) = .9992

3) Greater than 22 out of selected 62 adults have college degree

=1-BINOMDIST(23,62,.03,TRUE) = .0893

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