October 6, 2015

Homework Help: statistics

Posted by Erika Chicas on Wednesday, December 5, 2012 at 4:40pm.

If 30% of people in an area registered voters and 15 people are selected at ramdom from this area;
a. What is the probability thatexactly 3out of the15 people are registered voters?
b. What is the probability that at most 3 out of the 15 people are registered voters>
c. could we have used the normal approximation in the binomial in part b? Explain why or why not.

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