Pearson eText Introductory Statistics: ...3rd EditionRobert Gould, Rebecca Wong Publisher: PEARSON+ISBN: 9780136880882
Pearson eText Introductory Statistics: ...
Solutions for Pearson eText Introductory Statistics: Exploring the World Through Data -- Instant Access (Pearson+)
Problem 1SE:
Directions Determine whether each of the following variables would best be modeled as continuous or...Problem 2SE:
6.1-6.4 Directions Determine whether each of the following variables would best be modeled as...Problem 3SE:
6.1-6.4 Directions Determine whether each of the following variables would best be modeled as...Problem 4SE:
6.1-6.4 Directions Determine whether each of the following variables would best be modeled as...Problem 5SE:
Loaded Die (Example 2) A magician has shaved an edge off one side of a six-sided die, and as a...Problem 7SE:
Distribution of Two Thumbtacks When a certain type of thumbtack is flipped, the probability of its...Problem 8SE:
Two Children Make a list of all possible outcomes for gender when a family has two children. Assume...Problem 9SE:
Two Thumbtacks a. From your answers in Exercise 6.7, find the probability of getting 0 ups, 1 up, or...Problem 10SE:
Two Children Using your list of outcomes in Problem 6.8: a. Find the probability of having 0, 1, or...Problem 11SE:
Snow Depth (Example 3) Eric wants to go skiing tomorrow, but only if there are 3 inches or more of...Problem 12SE:
Snow Depth Refer to Exercise 6.11. What is the probability that the amount of new snow will be...Problem 13SE:
Applying the Empirical Rule with z-Scores The Empirical Rule applies rough approximations to...Problem 14SE:
Length of Pregnancy Assume that the lengths of pregnancy for humans is approximately Normally...Problem 15SE:
SAT Scores Quantitative SAT scores are approximately Normally distributed with a mean of 500 and a...Problem 16SE:
Women’s Heights Assume that college women’s heights are approximately Normally distributed with a...Problem 17SE:
Women’s Heights (Example 4) Assume college women’s heights are approximately Normally distributed...Problem 18SE:
SAT Scores Quantitative SAT scores are approximately Normally distributed with a mean of 500 and a...Problem 19SE:
Standard Normal Use the table or technology to find the answer to each question. Include an...Problem 20SE:
Standard Normal Use the table or technology to find the answer to each question. Include an...Problem 21SE:
Standard Normal Use technology or a Normal table to find each of the following. Include an...Problem 22SE:
Standard Normal Use technology or a Normal table to find each of the following. Include an...Problem 23SE:
Extreme Positive z -Scores For each question, find the area to the right of the given z -score in a...Problem 24SE:
Extreme Negative z-Scores For each question, find the area to the right of the given z-score in a...Problem 25SE:
St. Bernard Dogs (Example 5) According to dogtime .com, the mean weight of an adult St. Bernard dog...Problem 26SE:
Whales Whales have one of the longest gestation periods of any mammal. According to whalefacts.org,...Problem 27SE:
Boys’ Foot Length (Example 6) According to the Digital Human Modeling Project, the distribution of...Problem 28SE:
Women’s Foot Length According to the Digital Human Modeling Project, the distribution of foot...Problem 29SE:
Boys’ Foot Length Suppose a shoe store stocks shoes in men’s sizes 7 through 12. These shoes will...Problem 30SE:
Women’s Foot Length Suppose a shoe store stocks shoes in women’s sizes 5 though 9. These shoes will...Problem 31SE:
Birth Weights (Example 7) According to the British Medical Journal, the distribution of weights of...Problem 32SE:
Birth Lengths According to National Vital Statistics, the average length of a newborn baby is 19.5...Problem 33SE:
White Blood Cells The distribution of white blood cell count per cubic millimeter of whole blood is...Problem 34SE:
Red Blood Cells The distribution of red blood cell counts is different for men and women. For both,...Problem 35SE:
SAT Scores in Illinois According to the 2017 SAT Suite of Assessments Annual Report, the average SAT...Problem 36SE:
SAT Scores in Florida According to the 2017 SAT Suite of Assessments Annual Report, the average ERW...Problem 37SE:
Arm Span (Men) According to Anthropometric Survey data, the distribution of arm spans for males is...Problem 38SE:
Arm Span (Women) According to Anthropometric Survey data, the distribution of arm spans for females...Problem 39SE:
New York City Weather New York City’s mean minimum daily temperature in February is 27F...Problem 40SE:
Chicago Weather The average winter daily temperature in Chicago has a distribution that is...Problem 41SE:
Probability or Measurement (Inverse)? (Example 8) The Normal model N69,3 describes the distribution...Problem 42SE:
Probability or Measurement (Inverse)? The Normal model N150,10 describes the distribution of scores...Problem 43SE:
Inverse Normal, Standard In a standard Normal distribution, if the area to the left of a z - score...Problem 44SE:
Inverse Normal, Standard In a standard Normal distribution, if the area to the left of a z -score is...Problem 45SE:
Inverse Normal, Standard Assume a standard Normal distribution. Draw a separate, well-labeled Normal...Problem 46SE:
Inverse Normal, Standard Assume a standard Normal distribution. Draw a separate, well-labeled Normal...Problem 48SE:
Weights of Newborn Hippos The weight of newborn hippopotami is approximately Normal, with a mean of...Problem 49SE:
Medical School MCAT Scores on the 2017 MCAT, an exam required for all medical school applicants,...Problem 50SE:
Medical School GPA The distribution of grade point averages GPAs for medical school applicants in...Problem 51SE:
Women’s Heights Suppose college women’s heights are approximately Normally distributed with a mean...Problem 52SE:
Men’s Heights Suppose college men’s heights are approximately Normally distributed with a mean of...Problem 53SE:
Inverse SATs Critical reading SAT scores are distributed as N500,100. a. Find the SAT score at the...Problem 54SE:
Inverse Women’s Heights College women have heights with the following distribution (inches):...Problem 55SE:
Girls’ and Women’s Heights According to the National Health Center, the heights of 6-year-old girls...Problem 56SE:
Boys’ and Men’s Heights According to the National Health Center, the heights of 5-year-old boys are...Problem 57SE:
Cats’ Birth Weights The average birth weight of domestic cats is about 3 ounces. Assume that the...Problem 58SE:
Elephants’ Birth Weights The average birth weight of elephants is 230 pounds. Assume that the...Problem 59SE:
Gender of Children (Example 10) A married couple plans to have four children, and they are wondering...Problem 60SE:
Coin Flip A coin will be flipped four times, and the number of heads recorded. Explain why this is a...Problem 61SE:
Rolling a Die (Example 11) A die is rolled 5 times, and the number of spots for each roll is...Problem 62SE:
Twins In Exercise 6.59 you are told to assume that none of the children will be twins or other...Problem 63SE:
Free Throws Professional basketball player Draymond Green has a free-throw success rate of 70#37;....Problem 64SE:
On-Time Arrivals Alaska Airlines has an on-time arrival rate of 88#37;. Assume that in one day, this...Problem 65SE:
Identifying n,p, and x (Example 12) For each situation, identify the sample size n, the probability...Problem 66SE:
Identifying n,p, and x For each situation, identify the sample size n, the probability of a success...Problem 67SE:
Dog Owners (Example 13) According to the American Veterinary Medical Association, 36#37; of...Problem 68SE:
Cat Owners According to the American Veterinary Medical Association, 30#37; of Americans own a cat....Problem 69SE:
Passports According to data from the U.S. State Department, the percentage of Americans who have a...Problem 70SE:
Travel According to a survey conducted by OnePoll, a marketing research company, 10#37; of Americans...Problem 71SE:
Wisconsin Graduation Wisconsin has the highest high school graduation rate of all states at 90#37;....Problem 72SE:
Colorado Graduation Colorado has a high school graduation rate of 75#37;. a. In a random sample of...Problem 73SE:
Cell Phones According to the Centers of Disease Control and Prevention, 52#37; of U.S. households...Problem 74SE:
Landlines According to the Centers of Disease Control and Prevention, 44#37; of U.S. households...Problem 75SE:
Drones (Example 14) The use of drones, aircraft without onboard human pilots, is becoming more...Problem 76SE:
Drones A 2017 Pew Research Center report on drones found that only 24#37; of Americans felt that...Problem 77SE:
Texting While Walking According to a report by the American Academy of Orthopedic Surgeons, 29#37;...Problem 78SE:
Texting While Driving According to a study by the Colorado Department of Transportation, 25#37; of...Problem 80SE:
Free Throws Professional basketball LeBron James is a 74#37; free-throw shooter. Assume that free...Problem 83CRE:
Discrete or Continuous? Determine whether each of the following variables would best be modeled as...Problem 84CRE:
Probability Distribution In a game of chance, players draw one cube out of a bag containing 3 red...Problem 85CRE:
Birth Length A study of U.S. births published on the website Medscape from WebMD reported that the...Problem 86CRE:
Birth Length A study of U.S. births published on the website Medscape from WebMD reported that the...Problem 87CRE:
Males’ Body Temperatures A study of human body temperatures using healthy men showed a mean of 98.1F...Problem 88CRE:
Females’ Body Temperatures A study of human body temperatures using healthy women showed a mean of...Problem 90CRE:
Medical Licensing See problem 6.89 for information about USMLE scores. a. What USMLE score would...Problem 91CRE:
Systolic Blood Pressures Systolic blood pressures are approximately Normal with a mean of 120 and a...Problem 93CRE:
Stress According to a 2017 Gallup poll, 44#37; of Americans report they frequently feel stressed....Problem 94CRE:
Stress According to a 2017 Gallup poll, 17 of Americans report they rarely feel stressed. Suppose 80...Problem 95CRE:
Voice-Controlled Assistants Voice-controlled video assistants are being incorporated into a wide...Browse All Chapters of This Textbook
Chapter 1 - Introduction To DataChapter 2 - Picturing Variation With GraphsChapter 3 - Numerical Summaries Of Center And VariationChapter 4 - Regression Analysis: Exploring Associations Between VariablesChapter 5 - Modeling Variation With ProbabilityChapter 6 - Modeling Random Events: The Normal And Binomial ModelsChapter 7 - Survey Sampling And InferenceChapter 8 - Hypothesis Testing For Population ProportionsChapter 9 - Inferring Population MeansChapter 10 - Associations Between Categorical Variables
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