Critical Thinking According to the college registrars office, 40% of students enrolled in an introductory statistics class
Question:
Critical Thinking According to the college registrar’s office, 40% of students enrolled in an introductory statistics class this semester are freshmen, 25% are sophomores, 15% are juniors, and 20% are seniors.
You want to determine the probability that in a random sample of five students enrolled in introductory statistics this semester, exactly two are freshmen.
(a) Describe a trial. Can we model a trial as having only two outcomes? If so, what is success? What is failure? What is the probability of success?
(b) We are sampling without replacement. If only 30 students are enrolled in introductory statistics this semester, is it appropriate to model 5 trials as independent, with the same probability of success on each trial? Explain. What other probability distribution would be more appropriate in this setting?
AppendixLO1
Step by Step Answer:
Understandable Statistics Concepts And Methods
ISBN: 9780357719176
13th Edition
Authors: Charles Henry Brase, Corrinne Pellillo Brase