Homework Help: math

Posted by Zoe y on Friday, June 13, 2008 at 1:14pm.

Question: It was discovered that 1 outa every 5 selected adults visits disney world every year. If 30 adults are randomly selected what is the probability that exactly 7 of them will visit disney this year?
answer: .154 BUT I CANNOT FIGURE HOW THEY CAME UP WITH THIS ANSWER.. PLEASE HELP!

math - Reiny, Friday, June 13, 2008 at 7:25pm
C(30,7)(1/5)^7(4/5)^23 = .15382

Answer this Question

Related Questions

math - in a large survey, it was discovered that 1 out of every 5 adults visits ...
algebra - In a large survey, it was discovered that 1 out of every 5 adults ...
stats - This week we practice with Binomial Distribution. You can use Appendix ...
MATH - In a study 42% of adults questioned reported that their health was ...
mATH - First graders who misbehave in school may be more likely to be regular ...
statistics - First graders who misbehave in school may be more likely to be ...
Statistics - The table below gives the ages and systolic blood pressure (...
statistics - ) 43% of adults receive phone calls during the day. Amongst 10 ...
math - In a large population of adults, the mean IQ is 112 with a standard ...
math - A group of 50,000 randomly selected adults were survey about whether they...

For Further Reading

First Name:
School Subject:
Answer: