Step by step P(D)=P(D)=0.55P(B|D)=0.6P(B|D) = ||P(B|D)=P(B|D)=0.7P(DnB) =P(DnB)=PDnB)=PDnB)=(b) What is the probability that a randomly chosen student did not receive a grade of "B" orhigher in the course? A course in statistics is one of the most difficult at the local university. Because of this, for the past decade the university has arranged forteaching assistants to hold frequent discussion sessions as part of the course. Since the inception of the discussion sessions, 45% of the studentsenrolled in the course regularly attended the sessions, and the other 55% did not. Students regularly attending the sessions have performedbetter than those not regularly attending. In particular, 60% of the students regularly attending the sessions received a grade of "B" or higher inthe course, while only 30% of the students not regularly attending the sessions received a grade of "B" or higher in the course.Let D denote the event that a randomly chosen student (enrolled in the course) regularly attended the discussion sessions, and let D denote theevent that a randomly chosen student did not regularly attend the discussion sessions. Let B denote the event that a randomly chosen studentreceived a grade of "B" or higher in the course, and let B denote the event that a randomly chosen student did not receive a grade of "B" orhigher in the course.Fill in the probabilities to complete the tree diagram below, and then answer the question that follows. Do not round any of your responses.(If necessary, consult a list of formulas.)(a) Fill in the missing probabilities.

The events are: D=Randomly chosen students who regularly attended the discussion D= The randomly…

A course in statistics is one of the most difficult at the local university. Because of this, for the past decade the university has arranged for teaching assistants to hold frequent discussion sessions as part of the course. Since the inception of the discussion sessions, 45% of the stud enrolled in the course regularly attended the sessions, and the other 55% did not. Students regularly attending the sessions have performed better than those not regularly attending. In particular, 60% of the students regularly attending the sessions received a grade of "B" or higher the course, while only 30% of the students not regularly attending the sessions received a grade of "B" or higher in the course. Let D denote the event that a randomly chosen student (enrolled in the course) regularly attended the discussion sessions, and let D denote event that a randomly chosen student did not regularly attend the discussion sessions. Let B denote the event that a randomly chosen studer received a grade of "B" or higher in the course, and let B denote the event that a randomly chosen student did not receive a grade of "B" or higher in the course. Fill in the probabilities to complete the tree diagram below, and then answer the question that follows. Do not round any of your responses. (If necessary, consult a list of formulas.) (a) Fill in the missing probabilities.

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 10CYU