Quiz 1 -1st

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Carnegie Mellon University *

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22

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Statistics

Date

Apr 3, 2024

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pdf

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7

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10/13/22, 1:01 AM First-Quiz 1: Probability and Statistics 22-23 (M,O,P)1 https://canvas.cmu.edu/courses/29902/quizzes/85291?module_item_id=5178829 1/7 First-Quiz 1 Due Sep 1 at 11:59pm Points 15 Questions 15 Available after Aug 28 at 4pm Time Limit 60 Minutes Instructions Attempt History Attempt Time Score LATEST Attempt 1 12 minutes 10 out of 15 Score for this quiz: 10 out of 15 Submitted Sep 1 at 7:34pm This attempt took 12 minutes. The questions in this quiz are based on the easy problems in HW1, as well as general concepts covered in Module 1. Attempt this quiz after you have had a chance to work over the basic (easy) problems in HW1. Please select the answer closest to what you believe to be the correct answer in multiple choice questions. 1 / 1 pts Question 1 In 1.1, what is the size of the sample space? 4 8 16 Correct! Correct! 20
10/13/22, 1:01 AM First-Quiz 1: Probability and Statistics 22-23 (M,O,P)1 https://canvas.cmu.edu/courses/29902/quizzes/85291?module_item_id=5178829 2/7 0 / 1 pts Question 2 In 1.1, one of the basic outcomes is that candidate X wins at least two of the four swing states. True ou Answered ou Answered False orrect Answer orrect Answer 1 / 1 pts Question 3 In 2.1, what is the probability that Beth's flight from Miami arrives ON TIME in Atlanta and she DOES NOT make the connection to Pittsburgh? 0 Correct! Correct! 0.12 0.18 0.4 0 / 1 pts Question 4 In 2.2, what is the probability that Beth's flight is delayed arriving in Atlanta AND she makes her connection to Pittsburgh? 0
10/13/22, 1:01 AM First-Quiz 1: Probability and Statistics 22-23 (M,O,P)1 https://canvas.cmu.edu/courses/29902/quizzes/85291?module_item_id=5178829 3/7 0.12 orrect Answer orrect Answer 0.18 0.4 ou Answered ou Answered 1 / 1 pts Question 5 In 2.3, what is the probability that Beth makes her connection in Atlanta? 0.3 0.7 0.82 Correct! Correct! 1 1 / 1 pts Question 6 In 3.1, what is the current inventory level at the Pittsburgh warehouse? 40 60 80 Correct! Correct! 110
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10/13/22, 1:01 AM First-Quiz 1: Probability and Statistics 22-23 (M,O,P)1 https://canvas.cmu.edu/courses/29902/quizzes/85291?module_item_id=5178829 4/7 1 / 1 pts Question 7 In problem 4, what is the expected value of ? 2.5 5 Correct! Correct! 7.5 10 1 / 1 pts Question 8 In 4.1, what is the variance of ? 0.5 2.5 Correct! Correct! 5 6.25 1 / 1 pts Question 9 In 4.2, what is the variance of ? 0.5
10/13/22, 1:01 AM First-Quiz 1: Probability and Statistics 22-23 (M,O,P)1 https://canvas.cmu.edu/courses/29902/quizzes/85291?module_item_id=5178829 5/7 2.5 Correct! Correct! 7.5 12.5 1 / 1 pts Question 10 In 5.1, what is the probability that no passenger will be bumped? 0.782 0.863 Correct! Correct! 0.88 0.922 0 / 1 pts Question 11 In 5.2, what is the probability that the plane will be full? 0.101 ou Answered ou Answered 0.12 0.137 0.218 orrect Answer orrect Answer
10/13/22, 1:01 AM First-Quiz 1: Probability and Statistics 22-23 (M,O,P)1 https://canvas.cmu.edu/courses/29902/quizzes/85291?module_item_id=5178829 6/7 0 / 1 pts Question 12 In 6.1, what is the expected number of regular coffees that Moonbucks sells between 9AM to 9:15AM? 2 5 orrect Answer orrect Answer 10 15 ou Answered ou Answered 0 / 1 pts Question 13 In 6.2, what is the probability that Moonbucks sells at least one regular coffee between 9AM and 9:05AM? 0.583 0.685 ou Answered ou Answered 0.811 orrect Answer orrect Answer 0.993 1 / 1 pts Question 14 In 6.3, what is the probability that it has no client for regular coffee between 9:05AM and 9:10AM?
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10/13/22, 1:01 AM First-Quiz 1: Probability and Statistics 22-23 (M,O,P)1 https://canvas.cmu.edu/courses/29902/quizzes/85291?module_item_id=5178829 7/7 0.018 0.092 0.189 Correct! Correct! 0.504 1 / 1 pts Question 15 Given two mutually exclusive events , it is always true that True Correct! Correct! False Quiz Score: 10 out of 15