Introductory Statistics
3rd Edition
ISBN: 9780135188927
Author: Gould, Robert, Ryan, Colleen N. (colleen Nooter)
Publisher: Pearson,
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Chapter 6, Problem 2SE
6.1-6.4 Directions Determine whether each of the following variables would best be modeled as continuous or discrete.
a. The number of cars passing through an intersection in one hour
b. The weight of a person
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Question 2
The data below provides the battery life of thirty eight (38) motorcycle batteries.
100 83 83 105 110 81 114
99 101 105 78 115 74 96
106
89
94 81 106 91 93 86
79 103 94 108 113 100
117 120
77 93
93 85 76
89 78 88
680
a. Test the hypothesis that mean battery life is greater than 90. Use the 1% level of
significance.
b. Determine if the mean battery life is different from 80. Use the 10% level of
significance. Show all steps for the hypothesis test
c. Would your conlcusion in part (b) change at the 5% level of significance? |
d. Confirm test results in part (b) using JASP. Note: All JASP input files and output
tables should be provided
Suppose that 80% of athletes at a certain college graduate. You randomly select eight athletes. What’s the chance that at most 7 of them graduate?
Suppose that you flip a fair coin four times. What’s the chance of getting at least one head?
Chapter 6 Solutions
Introductory Statistics
Ch. 6 - Directions Determine whether each of the following...Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - 6.1-6.4 Directions Determine whether each of the...Ch. 6 - Loaded Die (Example 2) A magician has shaved an...Ch. 6 - Prob. 6SECh. 6 - Distribution of Two Thumbtacks When a certain type...Ch. 6 - Two Children Make a list of all possible outcomes...Ch. 6 - Two Thumbtacks a. From your answers in Exercise...Ch. 6 - Two Children Using your list of outcomes in...
Ch. 6 - Snow Depth (Example 3) Eric wants to go skiing...Ch. 6 - Snow Depth Refer to Exercise 6.11. What is the...Ch. 6 - Applying the Empirical Rule with z-Scores The...Ch. 6 - Length of Pregnancy Assume that the lengths of...Ch. 6 - SAT Scores Quantitative SAT scores are...Ch. 6 - Women’s Heights Assume that college women’s...Ch. 6 - Women’s Heights (Example 4) Assume college women’s...Ch. 6 - SAT Scores Quantitative SAT scores are...Ch. 6 - Standard Normal Use the table or technology to...Ch. 6 - Standard Normal Use the table or technology to...Ch. 6 - Standard Normal Use technology or a Normal table...Ch. 6 - Standard Normal Use technology or a Normal table...Ch. 6 - Extreme Positive z -Scores For each question, find...Ch. 6 - Extreme Negative z-Scores For each question, find...Ch. 6 - St. Bernard Dogs (Example 5) According to dogtime...Ch. 6 - Whales Whales have one of the longest gestation...Ch. 6 - Boys’ Foot Length (Example 6) According to the...Ch. 6 - Women’s Foot Length According to the Digital Human...Ch. 6 - Boys’ Foot Length Suppose a shoe store stocks...Ch. 6 - Women’s Foot Length Suppose a shoe store stocks...Ch. 6 - Birth Weights (Example 7) According to the British...Ch. 6 - Birth Lengths According to National Vital...Ch. 6 - White Blood Cells The distribution of white blood...Ch. 6 - Red Blood Cells The distribution of red blood cell...Ch. 6 - SAT Scores in Illinois According to the 2017 SAT...Ch. 6 - SAT Scores in Florida According to the 2017 SAT...Ch. 6 - Arm Span (Men) According to Anthropometric Survey...Ch. 6 - Arm Span (Women) According to Anthropometric...Ch. 6 - New York City Weather New York City’s mean minimum...Ch. 6 - Chicago Weather The average winter daily...Ch. 6 - Probability or Measurement (Inverse)? (Example 8)...Ch. 6 - Probability or Measurement (Inverse)? The Normal...Ch. 6 - Inverse Normal, Standard In a standard Normal...Ch. 6 - Inverse Normal, Standard In a standard Normal...Ch. 6 - Inverse Normal, Standard Assume a standard Normal...Ch. 6 - Inverse Normal, Standard Assume a standard Normal...Ch. 6 - Prob. 47SECh. 6 - Weights of Newborn Hippos The weight of newborn...Ch. 6 - Medical School MCAT Scores on the 2017 MCAT, an...Ch. 6 - Medical School GPA The distribution of grade point...Ch. 6 - Women’s Heights Suppose college women’s heights...Ch. 6 - Men’s Heights Suppose college men’s heights are...Ch. 6 - Inverse SATs Critical reading SAT scores are...Ch. 6 - Inverse Women’s Heights College women have heights...Ch. 6 - Girls’ and Women’s Heights According to the...Ch. 6 - Boys’ and Men’s Heights According to the National...Ch. 6 - Cats’ Birth Weights The average birth weight of...Ch. 6 - Elephants’ Birth Weights The average birth weight...Ch. 6 - Gender of Children (Example 10) A married couple...Ch. 6 - Coin Flip A coin will be flipped four times, and...Ch. 6 - Rolling a Die (Example 11) A die is rolled 5...Ch. 6 - Twins In Exercise 6.59 you are told to assume that...Ch. 6 - Free Throws Professional basketball player...Ch. 6 - On-Time Arrivals Alaska Airlines has an on-time...Ch. 6 - Identifying n,p, and x (Example 12) For each...Ch. 6 - Identifying n,p, and x For each situation,...Ch. 6 - Dog Owners (Example 13) According to the American...Ch. 6 - Cat Owners According to the American Veterinary...Ch. 6 - Passports According to data from the U.S. State...Ch. 6 - Travel According to a survey conducted by OnePoll,...Ch. 6 - Wisconsin Graduation Wisconsin has the highest...Ch. 6 - Colorado Graduation Colorado has a high school...Ch. 6 - Cell Phones According to the Centers of Disease...Ch. 6 - Landlines According to the Centers of Disease...Ch. 6 - Drones (Example 14) The use of drones, aircraft...Ch. 6 - Drones A 2017 Pew Research Center report on drones...Ch. 6 - Texting While Walking According to a report by the...Ch. 6 - Texting While Driving According to a study by the...Ch. 6 - Prob. 79SECh. 6 - Free Throws Professional basketball LeBron James...Ch. 6 - Prob. 81SECh. 6 - Prob. 82SECh. 6 - Discrete or Continuous? Determine whether each of...Ch. 6 - Probability Distribution In a game of chance,...Ch. 6 - Birth Length A study of U.S. births published on...Ch. 6 - Birth Length A study of U.S. births published on...Ch. 6 - Males’ Body Temperatures A study of human body...Ch. 6 - Females’ Body Temperatures A study of human body...Ch. 6 - Prob. 89CRECh. 6 - Medical Licensing See problem 6.89 for information...Ch. 6 - Systolic Blood Pressures Systolic blood pressures...Ch. 6 - Prob. 92CRECh. 6 - Stress According to a 2017 Gallup poll, 44#37; of...Ch. 6 - Stress According to a 2017 Gallup poll, 17 of...Ch. 6 - Voice-Controlled Assistants Voice-controlled video...Ch. 6 - Prob. 96CRECh. 6 - Prob. 97CRECh. 6 - Prob. 98CRECh. 6 - Prob. 99CRECh. 6 - Quantitative SAT Scores, Normal and Binomial The...Ch. 6 - Prob. 101CRECh. 6 - Birth Length and z-Scores, Inverse Babies in the...
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