SOCSCI 2J03 Lecture Notes - Lecture 23: Binomial Distribution, Telemarketing, Standard Deviation

• School: McMaster University
• Department: Social Sciences
• Course: SOCSCI 2J03
• Professor: Rizwan Tahir

Document Summary

Socsci 2j03 lecture 23 binomial probabilities continued and normal. Distribution: using the formulas for the mean and standard deviation of the binomial distribution: 9666: average is 11 adults out of 50 will say they have no religious affiliation. Thinking challenge: you"re a telemarketer selling service contracts for macy"s. You"ve sold 20 in your last 100 calls (p = . 20). If you call 12 people tonight, what"s the probability of: a. Exactly 2 sales: c. at most 2 sales, d. at least 2 sales, n = 12, p = . 2. From the binomial tables: p(0) = . 0687, p(2) = . 2835, p(at most 2) = p(0) + p(1) + p(2) = . 5584: p(at least 2) = p(2) + p(3)+ p(12) 6: continuous random variables and the normal distribution: a continuous variable is a variable that can assume any value on a continuum (can assume an uncountable number of values)