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Title: What is the probability that 7 or more students in a group of 15 do not believe in Global warming? Post by: hurrayforbio on Jan 29, 2013 The probability a student does not believe in Global warming .7.
Title: What is the probability that 7 or more students in a group of 15 do not believe in Global warming? Post by: smokin7acehole on Jan 29, 2013 sum n=7 to 15 {[n C 15] * (.7)^n * (.3)^(15-n)}
Add all the binomial probabilities from 7 through 15, which is what that formula means. Title: What is the probability that 7 or more students in a group of 15 do not believe in Global warming? Post by: smont on Jan 29, 2013 Binomial situation with n = 15 and p = 0.7
P(7 or more) = 1 - P(6) - P(5) . . . - P(2) - P(1) - P(0) P(6) = (15C6)*0.7^6*0.3^9 = 0.0116 (4 dec. pl.) I'll leave you to work out the probabilitites for 5 to 0 and subtract them all from 1. Title: What is the probability that 7 or more students in a group of 15 do not believe in Global warming? Post by: illestb on Jan 29, 2013 It depends whether they're American or people who actually are open to something new with evidence to back it up.
Title: What is the probability that 7 or more students in a group of 15 do not believe in Global warming? Post by: leo749 on Jan 29, 2013 Depends on how liberal the are. hopefully none of them believe it. Earth has been around for 4.55 BILLION years and in 1 Decade Humans will Destroy it from a little smoke
ha ha good luck Nice scare tactic's Liberals |