8.9. CHAPTER8 EXERCISES 209 13. local political consulting firm maintains that 76.3% of all persons surveyed in California 20 days after the November 2016 presidential election felt that President Elect Donald Trump was doing irreparable damage to the country by insisting he would implement his illegal immigration policies, including build a wall between the United States and Mexico. Assuming the consulting firm is accurate in their statement, what is the probability that out of 14 persons randomly contacted by telephone: (a) exactly 4 people believe Trump has done irreparable damage to the country? (b) at least 10 people believe Trump has done irreparable damage to the country? (c) 6 to 9 (at least 6 but no more than 9) people believe Trump has done irreparable damage to the country?

8.9. CHAPTER8 EXERCISES 209 13. local political consulting firm maintains that 76.3% of all persons surveyed in California 20 days after the November 2016 presidential election felt that President Elect Donald Trump was doing irreparable damage to the country by insisting he would implement his illegal immigration policies, including build a wall between the United States and Mexico. Assuming the consulting firm is accurate in their statement, what is the probability that out of 14 persons randomly contacted by telephone: (a) exactly 4 people believe Trump has done irreparable damage to the country? (b) at least 10 people believe Trump has done irreparable damage to the country? (c) 6 to 9 (at least 6 but no more than 9) people believe Trump has done irreparable damage to the country?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

1. The electric company owns 40 generators which power the local area. Each of these generators has a 10% chance of needing maintenance on any particular day. b) What is the expected number of generator needing maintenance on any one day? 4 40 10 400
6. Clinical trials have shown that 90% of the patients with severe migraine experience relief of their pain after taking the drug Nimodipine. Suppose 15 migraine patients try Nimodipine. a. What is the probability all of the patients experience relief? b. What is the probability only 10 patients experience relief? What is the probability at least 12 patients experience relief? d. What is the probability at most 10 patients experience relief? e. How many are expected to experience relief?
7. Aaron purchased 19 video games. The defect rate for these types of video games is 1.8%. What is the probability that at least three of the video games he purchased are defective?
10. A bank classifies borrowers as high risk or low risk. Only 15% of its loans are made to those in the high-risk category. Of all its loans, 5% are in default, and 40% of those in default were made to high-risk borrowers. What is the probability that a high-risk borrower will default?
3. Assume that 12% of people are left-handed. You are trying to find 3 left-handed individuals to interview for an article. Assuming that everyone you approach is willing to be interviewed ... a) what is the probability that you need to approach exactly 6 people to find 3 left-handed individuals? b) what is the probability that you need to approach 6 or more people to find 3 left-handed individuals? c) what is the expected value of the number of individuals that you will need to approach to find 3 left- handed individuals?
5. Five hundred tickets will be sold and these will be raffled during the town fiesta. One of these tickets will win ₱3000 and the rest will win nothing. What will be the expected outcome and variance of your gain if you will buy one of the tickets?6. Astrid tosses an unbiased coin. On each toss, she wins ₱50 if a head appears, and loses ₱40 if a tail appears. What will be the expected value and variance of her gain?
7. State College is playing a rival team for the football championship. If State's first- string quarterback is healthy, State College has a 75% chance of winning. If they have to start their backup quarterback, their chances of winning drop to 40%. The team physician says that there are a 70% chance that the first-string quarterback will play. a. What is the probability that State will win that game? b. Suppose that you miss the game but you read in the headlines of Sunday's paper that State won. What is the probability that the second-string quarterback started?
5.Approximately 64% of the people murdered actually knew their murderer. Given 63 current unsolved murders, what is the probability that at least (equal to and more than) 35 victims knew their murderer?
The needle used in a hypodermic syringe has to be produced according to very strict standards. As a result, approximately 1.6% of all the needles manufactured need to be discarded for defects and other imperfections. A batch of hypodermic needles contains 160 needles. a. What is the probability that at least one of the needles in the batch will be defective? b. How many needles are expected to be discarded due to imperfections? c. What is the probability that exactly that many needles (as calculated in part (c)) in a batch will need to be discarded a. P(At Least 1 Discarded) = Round to 4 significant digits b. Expected # of Needles Discarded = Round to nearest whole number c. P(Expected # of Needles Discarded) = Round to 4 significant digits
Sierra College students enrolled in an online Elementary Statistics course were asked to participate in an anonymous onlne survey. The survey asked the students "Which type of device will you primarily use to access your online course in Canvas?". Of the 152 students who answered this question, 20 responded "a desktop computer", 121 responded "a laptop computer", 6 responded "a smartphone", and 5 responded "a tablet". The Sierra College Mathematics Department believes that less than 5% of students enrolled in an online Elementary Statistics course primarily uses a smartphone to access their online course in Canvas. Use the data collected in the survey to conduct a hypothesis testing procedure to test this belief. What conclusion should be reached according to the results of this hypothesis test?