Introductory Statistics (10th Edition)
10th Edition
ISBN: 9780321989178
Author: Neil A. Weiss
Publisher: PEARSON
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Chapter 4.2, Problem 67E
(a).
To determine
To check: Whether events A and B are mutually exclusive or not.
(b).
To determine
To check: Whether events B and C are mutually exclusive or not.
(c).
To determine
To check: Whether events A,C, and D are mutually exclusive or not.
(d).
To determine
To check: Whether three of the events among A,B, C, and D are mutually exclusive or not. Also check the four events are mutually exclusive or not.
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Students have asked these similar questions
(a) Test the hypothesis.
Consider the hypothesis test Ho
=
:
against H₁o < 02. Suppose that the sample sizes aren₁ =
7 and n₂
= 13 and that
$²
= 22.4 and $22
= 28.2. Use α = 0.05.
Ho
is not
✓ rejected.
9-9
IV
(b) Find a 95% confidence interval on of 102. Round your answer to two decimal places (e.g. 98.76).
Let us suppose we have some article reported on a study of potential sources of injury to equine veterinarians conducted at a
university veterinary hospital. Forces on the hand were measured for several common activities that veterinarians engage in when
examining or treating horses. We will consider the forces on the hands for two tasks, lifting and using ultrasound. Assume that both
sample sizes are 6, the sample mean force for lifting was 6.2 pounds with standard deviation 1.5 pounds, and the sample mean force
for using ultrasound was 6.4 pounds with standard deviation 0.3 pounds. Assume that the standard deviations are known.
Suppose that you wanted to detect a true difference in mean force of 0.25 pounds on the hands for these two activities. Under the null
hypothesis, 40 = 0. What level of type II error would you recommend here?
Round your answer to four decimal places (e.g. 98.7654). Use a
= 0.05.
β
= i
What sample size would be required?
Assume the sample sizes are to be equal.…
=
Consider the hypothesis test Ho: μ₁ = μ₂ against H₁ μ₁ μ2. Suppose that sample sizes are n₁ =
15 and n₂ =
15, that x1 = 4.7
and X2 = 7.8 and that s² = 4 and s² = 6.26. Assume that o and that the data are drawn from normal distributions. Use
απ 0.05.
(a) Test the hypothesis and find the P-value.
(b) What is the power of the test in part (a) for a true difference in means of 3?
(c) Assuming equal sample sizes, what sample size should be used to obtain ẞ = 0.05 if the true difference in means is - 2? Assume
that α = 0.05.
(a) The null hypothesis is
98.7654).
rejected. The P-value is 0.0008
(b) The power is 0.94
. Round your answer to four decimal places (e.g.
Round your answer to two decimal places (e.g. 98.76).
(c) n₁ = n2 =
1
. Round your answer to the nearest integer.
Chapter 4 Solutions
Introductory Statistics (10th Edition)
Ch. 4.1 - Roughly speaking, what is an experiment? an event?Ch. 4.1 - Concerning the equal-likelihood model of...Ch. 4.1 - What is the difference between selecting a member...Ch. 4.1 - If a member is selected at random from a finite...Ch. 4.1 - An experiment has 20 possible outcomes, all...Ch. 4.1 - An experiment has 40 possible outcomes, all...Ch. 4.1 - State the frequentist interpretation of...Ch. 4.1 - Interpret each of the following probability...Ch. 4.1 - Interpret each of the following probability...Ch. 4.1 - Which of the following numbers could not possibly...
Ch. 4.1 - Which of the following numbers could not possibly...Ch. 4.1 - Oklahoma State Officials. Refer to Table 4.1 on...Ch. 4.1 - Oklahoma State Officials. Refer to Table 4.1 on...Ch. 4.1 - Playing Cards. An ordinary deck of playing cards...Ch. 4.1 - Poker Chips. A bowl contains 12 poker chips3 red,...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - In Exercises 4.164.26, express your probability...Ch. 4.1 - Housing Units. Refer to Exercise 4.19. a. Which,...Ch. 4.1 - Prob. 28ECh. 4.1 - The probability is 0.314 that the gestation period...Ch. 4.1 - The probability is 0.667 that the favorite in a...Ch. 4.1 - U.S. Governors. In 2013, according to the National...Ch. 4.1 - Prob. 33ECh. 4.1 - Bilingual and Trilingual. At a certain university...Ch. 4.1 - Consider the random experiment of tossing a coin...Ch. 4.1 - Roulette. An American roulette wheel contains 38...Ch. 4.1 - Cyber Affair. As found in USA TODAY, results of a...Ch. 4.1 - Belmont Stakes. The Belmont Stakes is the third...Ch. 4.1 - Prob. 39ECh. 4.1 - Lightning Casualties. An issue of Travel + Leisure...Ch. 4.2 - What type of graphical displays are useful for...Ch. 4.2 - Construct a Venn diagram representing the event a....Ch. 4.2 - Construct a Venn diagram representing the event a....Ch. 4.2 - Construct a Venn diagram representing the event a....Ch. 4.2 - Construct a Venn diagram representing the event a....Ch. 4.2 - Consider the set consisting of the first 12...Ch. 4.2 - Consider the set consisting of the first 10...Ch. 4.2 - What does it mean for two events to be mutually...Ch. 4.2 - Prob. 49ECh. 4.2 - Answer true or false to the following statement...Ch. 4.2 - Answer true or false to the following statement...Ch. 4.2 - Draw a Venn diagram portraying four mutually...Ch. 4.2 - Dice. When one die is rolled, the following six...Ch. 4.2 - Horse Racing. In a horse race, the odds against...Ch. 4.2 - Committee Selection. A committee consists of five...Ch. 4.2 - Prob. 56ECh. 4.2 - Prob. 57ECh. 4.2 - Horse Racing. Refer to Exercise 4.54. For each of...Ch. 4.2 - Prob. 59ECh. 4.2 - Prob. 60ECh. 4.2 - Diabetes Prevalence. In a report titled Behavioral...Ch. 4.2 - Family Planning. The following table provides a...Ch. 4.2 - World Series. The World Series in baseball is won...Ch. 4.2 - NBA Finals. The NBA Finals of basketball is played...Ch. 4.2 - Housing Units. The U.S. Census Bureau publishes...Ch. 4.2 - Protecting the Environment. A survey was conducted...Ch. 4.2 - Prob. 67ECh. 4.2 - Prob. 68ECh. 4.2 - Housing Units. Refer to Exercise 4.65. Among the...Ch. 4.2 - Prob. 70ECh. 4.2 - Die and Coin. Consider the following random...Ch. 4.2 - Jurors. From 10 men and 8 women in a pool of...Ch. 4.2 - Let A and B be events of a sample space. a....Ch. 4.2 - Prob. 74ECh. 4.2 - Suppose that A, B, and C are three events that...Ch. 4.2 - Let A, B, and C be events of a sample space....Ch. 4.3 - Playing Cards. An ordinary deck of playing cards...Ch. 4.3 - Prob. 78ECh. 4.3 - Suppose that A and B are mutually exclusive events...Ch. 4.3 - Suppose that C and D are mutually exclusive events...Ch. 4.3 - Let E be an event with probability 0.35. Find the...Ch. 4.3 - Let F be an event with probability 0.72. Find the...Ch. 4.3 - Prob. 83ECh. 4.3 - Prob. 84ECh. 4.3 - Suppose that A and B are events such that P(A) =...Ch. 4.3 - Suppose that A and B are events such that P(A) =...Ch. 4.3 - Prob. 87ECh. 4.3 - Sales Tax Receipts. The State of Texas maintains...Ch. 4.3 - Twelfth-Grade Smokers. The National Institute on...Ch. 4.3 - Oil Spills. The U.S. Coast Guard maintains a...Ch. 4.3 - Internet Access. From the document Computer and...Ch. 4.3 - Religion in America. According to the Religious...Ch. 4.3 - Ages of Senators. Refer to Exercise 4.87. Use the...Ch. 4.3 - Sales Tax Receipts. Refer to Exercise 4.88. Use...Ch. 4.3 - Student Debt. The Association of American...Ch. 4.3 - Naturalization. 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Li et al. analyzed existing...Ch. 4.4 - Prob. 116ECh. 4.4 - New England Patriots. Refer to Exercise 4.111. a....Ch. 4.4 - Motor Vehicle Use. Refer to Exercise 4.112. a. For...Ch. 4.4 - Prob. 119ECh. 4.4 - Farms. Refer to Exercise 4.114. A U.S. farm is...Ch. 4.4 - Prob. 121ECh. 4.4 - What does the general addition rule (Formula 4.3...Ch. 4.4 - In this exercise, you are asked to verify that the...Ch. 4.5 - Regarding conditional probability: a. What is it?...Ch. 4.5 - Give an example of the conditional probability of...Ch. 4.5 - Suppose that A and B are events such that P(A) =...Ch. 4.5 - Suppose that C and D are events such that P(C) =...Ch. 4.5 - Suppose that C and D are events such that P(C) =...Ch. 4.5 - Suppose that A and B are events such that P(A) =...Ch. 4.5 - In each of Exercises 4.1304.133, we have presented...Ch. 4.5 - In each of Exercises 4.1304.133, we have presented...Ch. 4.5 - In each of Exercises 4.1304.133, we have presented...Ch. 4.5 - In each of Exercises 4.1304.133, we have presented...Ch. 4.5 - Coin Tossing. A balanced dime is tossed twice. The...Ch. 4.5 - Playing Cards. One card is selected at random from...Ch. 4.5 - State Populations. From Infoplease, we obtained...Ch. 4.5 - Housing Units. The U.S. Census Bureau publishes...Ch. 4.5 - Protective Orders. In the article Judicial...Ch. 4.5 - New England Patriots. From the National Football...Ch. 4.5 - Acclaim or Attack. In the article A Functional...Ch. 4.5 - Self-Concept and Sightedness. Self-concept can be...Ch. 4.5 - Living Arrangements. As reported by the U.S....Ch. 4.5 - Smartphone Ownership. From the document Smartphone...Ch. 4.5 - HPV Vaccine. In the article Correlates for...Ch. 4.5 - Dentist Visits. The National Center for Health...Ch. 4.5 - Scientists and Engineers. The U.S. National...Ch. 4.5 - Property Crime. As reported by the Federal Bureau...Ch. 4.5 - Prob. 148ECh. 4.5 - Prob. 149ECh. 4.5 - Dice. Two balanced dice are thrown, one red and...Ch. 4.5 - Royal Offspring. A king and queen have two...Ch. 4.5 - New England Patriots. Refer to Exercise 4.139. a....Ch. 4.5 - Let A and B be events, each with positive...Ch. 4.5 - Drugs and Car Accidents. Suppose that it has been...Ch. 4.6 - Regarding the general multiplication rule and the...Ch. 4.6 - Suppose that A and B are two events. a. What does...Ch. 4.6 - Prob. 157ECh. 4.6 - Prob. 158ECh. 4.6 - Prob. 159ECh. 4.6 - Suppose P(A) = 7/8 and P(B | A) = 5/7. Find P(A...Ch. 4.6 - Prob. 161ECh. 4.6 - Prob. 162ECh. 4.6 - Prob. 163ECh. 4.6 - Prob. 164ECh. 4.6 - Prob. 165ECh. 4.6 - In each of Exercises 4.1654.176, decide whether or...Ch. 4.6 - In each of Exercises 4.1654.176, decide whether or...Ch. 4.6 - In each of Exercises 4.1654.176, decide whether or...Ch. 4.6 - Prob. 169ECh. 4.6 - Prob. 170ECh. 4.6 - Prob. 171ECh. 4.6 - Prob. 172ECh. 4.6 - Prob. 173ECh. 4.6 - Prob. 174ECh. 4.6 - Prob. 175ECh. 4.6 - Prob. 176ECh. 4.6 - Prob. 177ECh. 4.6 - Suppose that C, D, and E are independent events...Ch. 4.6 - Holiday Depression. According to the Opinion...Ch. 4.6 - Addiction Medicine. The report Addiction Medicine:...Ch. 4.6 - ESP Experiment. A person has agreed to participate...Ch. 4.6 - Cards. Cards numbered 1, 2, 3, . . . , 10 are...Ch. 4.6 - Class Levels. A frequency distribution for the...Ch. 4.6 - Governors. The National Governors Association...Ch. 4.6 - Medical School Faculty. The Association of...Ch. 4.6 - Injured Americans. The National Center for Health...Ch. 4.6 - U.S. Congress. The U.S. Congress, Joint Committee...Ch. 4.6 - Doctoral Degrees. The U.S. National Science...Ch. 4.6 - Coin Tossing. When a balanced dime is tossed three...Ch. 4.6 - Prob. 190ECh. 4.6 - Drawing Cards. Two cards are drawn at random from...Ch. 4.6 - Yahtzee. In the game of Yahtzee, five balanced...Ch. 4.6 - Prob. 193ECh. 4.6 - Prob. 194ECh. 4.6 - Traffic Fatalities. According to Accident Facts,...Ch. 4.6 - Death Penalty. One of the more contentious issues...Ch. 4.6 - Nuts and Bolts. A hardware manufacturer produces...Ch. 4.6 - Activity Limitations. The National Center for...Ch. 4.6 - Scholarships. Marilyn vos Savant writes the column...Ch. 4.6 - General Multiplication Rule Extended. For three...Ch. 4.6 - Prob. 201ECh. 4.6 - Calculus Pretest. Students are given three chances...Ch. 4.6 - In this exercise, you examine further the concepts...Ch. 4.6 - Prob. 204ECh. 4.6 - Prob. 205ECh. 4.6 - Coin Tossing. When a balanced coin is tossed four...Ch. 4.7 - What does it mean for four events to be...Ch. 4.7 - What does it mean for four events to be mutually...Ch. 4.7 - Are exhaustive events necessarily mutually...Ch. 4.7 - Explain why an event and its complement are always...Ch. 4.7 - In each of Exercises 4.2114.214, the events A1,...Ch. 4.7 - Prob. 212ECh. 4.7 - Prob. 213ECh. 4.7 - In each of Exercises 4.2114.214, the events A1,...Ch. 4.7 - Prob. 215ECh. 4.7 - Playing Golf. From the National Golf Foundation...Ch. 4.7 - Belief in Extraterrestrial Aliens. According to an...Ch. 4.7 - Prob. 218ECh. 4.7 - Education and Astrology. The following table...Ch. 4.7 - Chronic Illness and Participation. The aim of a...Ch. 4.7 - Obesity and Age. A person is said to be overweight...Ch. 4.7 - Corporations and Elections. Based on research by...Ch. 4.7 - Textbook Revision. Textbook publishers must...Ch. 4.7 - Broken Eggs. At a grocery store, eggs come in...Ch. 4.7 - Pap Tests. Medical tests are frequently used to...Ch. 4.7 - Monty Hall Problem. Several years ago, in a column...Ch. 4.7 - Red and Black. You have two cards. One is red on...Ch. 4.7 - Smoking and Lung Disease. Refer to Example 4.26 on...Ch. 4.8 - What are counting rules? Why are they important?Ch. 4.8 - Why is the basic counting rule (BCR) often...Ch. 4.8 - Prob. 231ECh. 4.8 - Identify the notation used for each of the...Ch. 4.8 - Prob. 233ECh. 4.8 - Prob. 234ECh. 4.8 - Prob. 235ECh. 4.8 - Prob. 236ECh. 4.8 - Determine the value of each quantity. a. 4P3 b....Ch. 4.8 - Determine the value of each quantity. a. 7P3 b....Ch. 4.8 - Prob. 239ECh. 4.8 - Determine the value of each quantity. a. 7C3 b....Ch. 4.8 - Prob. 241ECh. 4.8 - Prob. 242ECh. 4.8 - Prob. 243ECh. 4.8 - Home Models and Elevations. Refer to Example 4.27...Ch. 4.8 - Home Models and Elevations. Refer to Example 4.27...Ch. 4.8 - Prob. 246ECh. 4.8 - Zip Codes. The author spoke with a representative...Ch. 4.8 - Computerized Testing. A statistics professor needs...Ch. 4.8 - Telephone Numbers. In the United States, telephone...Ch. 4.8 - i Dolls. An advertisement for i Dolls states:...Ch. 4.8 - Prob. 251ECh. 4.8 - Testing for ESP. An extrasensory perception (ESP)...Ch. 4.8 - Los Angeles Dodgers. From the official website of...Ch. 4.8 - Prob. 254ECh. 4.8 - Assigning Sales Territories. The sales manager of...Ch. 4.8 - Five-Card Stud. A hand of five-card stud poker...Ch. 4.8 - IRS Audits. The Internal Revenue Service (IRS)...Ch. 4.8 - A Lottery. At a lottery, 100 tickets were sold and...Ch. 4.8 - Shake. Ten people attend a party. If each pair of...Ch. 4.8 - Championship Series. Professional sports leagues...Ch. 4.8 - Five-Card Draw. A hand of five-card draw poker...Ch. 4.8 - Senate Committees. The U.S. Senate consists of 100...Ch. 4.8 - Venus Throw. The Dr. Fishers Casebook feature...Ch. 4.8 - Prob. 264ECh. 4.8 - Quality Assurance. Refer to Example 4.36, which...Ch. 4.8 - The Birthday Problem. A biology class has 38...Ch. 4.8 - Mega Millions. Mega Millions is a multi-state...Ch. 4.8 - TrueFalse Tests. A student takes a truefalse test...Ch. 4.8 - Florida Battleground State. From the Washington...Ch. 4.8 - Sampling Without Replacement. A simple random...Ch. 4.8 - The Birthday Problem. Refer to Exercise 4.266, but...Ch. 4 - Why is probability theory important to statistics?Ch. 4 - Regarding the equal-likelihood model, a. what is...Ch. 4 - What meaning is given to the probability of an...Ch. 4 - Decide which of these numbers could not possibly...Ch. 4 - Identify a commonly used graphical technique for...Ch. 4 - What does it mean for two or more events to be...Ch. 4 - Suppose that E is an event. Use probability...Ch. 4 - Prob. 8RPCh. 4 - Identify one reason why the complementation rule...Ch. 4 - Prob. 10RPCh. 4 - The sum of the joint probabilities in a row or...Ch. 4 - Prob. 12RPCh. 4 - Prob. 13RPCh. 4 - Prob. 14RPCh. 4 - Prob. 15RPCh. 4 - State the basic counting rule (BCR).Ch. 4 - A, B, and C are mutually exclusive events such...Ch. 4 - Prob. 18RPCh. 4 - A and B are events such that P(A) = 0.2, P(B) =...Ch. 4 - Prob. 20RPCh. 4 - A and B are events such that P(A) = 0.4, P(B) =...Ch. 4 - Prob. 22RPCh. 4 - Prob. 23RPCh. 4 - A1, A2, and A3 are mutually exclusive and...Ch. 4 - Prob. 25RPCh. 4 - Prob. 26RPCh. 4 - How many samples of size 3 are possible from a...Ch. 4 - Prob. 28RPCh. 4 - TV Location. The Television Bureau of Advertising...Ch. 4 - Adjusted Gross Incomes. The Internal Revenue...Ch. 4 - Prob. 31RPCh. 4 - Prob. 32RPCh. 4 - Adjusted Gross Incomes. Refer to Problems 30 and...Ch. 4 - Adjusted Gross Incomes. Consider the events (not...Ch. 4 - School Enrollment. The National Center for...Ch. 4 - School Enrollment. Refer to the information given...Ch. 4 - School Enrollment. Refer to the information given...Ch. 4 - School Enrollment. Refer to the information given...Ch. 4 - Public Programs. During one year, the College of...Ch. 4 - Divorced Birds. Research by B. Hatchwell et al. on...Ch. 4 - Color Blindness. According to M. Neitz and J....Ch. 4 - Smartphone Ownership. The Pew Internet American...Ch. 4 - Quinella and Trifecta Wagering. In Example 4.31 on...Ch. 4 - Bridge. A bridge hand consists of an unordered...Ch. 4 - Sweet Sixteen. In the NCAA basketball tournament,...Ch. 4 - TVs and DVDs. According to Nielsen Media Research,...Ch. 4 - At the beginning of this chapter on pages 156157,...
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