ELEMENTARY STATISTICS: STEP BY STEP- ALE
10th Edition
ISBN: 9781266422362
Author: Bluman
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 13.2, Problem 15E
a.
To determine
To identify: The claim and state
b.
To determine
To find: The critical value.
c.
To determine
To find: the test statistic
d.
To determine
To decide: Whether to reject or fail to reject the null hypothesis at level of significance
e.
To determine
To interpret: The decision in the context of the original claim.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A physician wants to see if there was a difference in the average smokers' daily cigarette consumption after wearing a nicotine patch. The physician set up a study to track daily smoking consumption. In the study, the patients were given a placebo patch that did not contain nicotine for 4 weeks, then a nicotine patch for the following 4 weeks. Test to see if there was a difference in the average smoker's daily cigarette consumption using α = 0.01. The hypotheses are:
H0 : μD = 0
H1 : μD ≠ 0
t-Test: Paired Two Sample for Means
Placebo
Nicotine
Mean
18.75
12.3125
Variance
66.599
34.6667
Observations
16
16
Pearson Correlation
0.6105
Hypothesized Mean Difference
0
df
15
t Stat
3.5481
P(T<=t) one-tail
0.0126
t Critical one-tail
2.6025
P(T<=t) two-tail
0.0252
t Critical two-tail
2.9467
What is the correct p-value?
Question 1 options:…
Health care workers who use latex gloves with glove powder on a daily basis are particularly susceptible to developing a latex allergy. Each in a sample of 44 hospital employees who were diagnosed with a latex allergy based on a skin-prick test reported
on their exposure to latex gloves. Summary statistics for the number of latex gloves used per week are x= 19.4 and s = 11.7. Complete parts (a) - (d).
a. Give a point estimate for the average number of latex gloves used per week by all health care workers with a latex allergy.
b. Form a 95% confidence interval for the average number of latex gloves used per week by all health care workers with a latex allergy.
(Use integers or decimals for any numbers in the expression. Round to two decimal places as needed.)
c. Give a practical interpretation of the interval, part (b).
O A. One can be 95% confident that latex gloves cause allergies for all who use a number of gloves contained in the interval.
O B. One can be 95% confident that the…
Lecture(8.1):
A research study was conducted that measured empathy after watching Sesame street for five days
in a row. The study was conducted twice. For Study A the researcher recruited 20 children and randomly assigned them into 2 groups, one group who watched Sesame street. and a second
group who did not watched Sesame street. Empathy was measured after 5 days. For study B the researcher decided to only recruit only 10 children who all watched Sesame street and this time
measued empathy before the first hour of Sesame street and again afte 5 days once the lasr hour
was watched. Which of these studies uses an independent sample and which uses a dependent
sample.?
Chapter 13 Solutions
ELEMENTARY STATISTICS: STEP BY STEP- ALE
Ch. 13.1 - The following table lists the percentages of...Ch. 13.1 - Exercises 131 1. What is meant by nonparametric...Ch. 13.1 - When should nonparametric statistics be used?Ch. 13.1 - Prob. 3ECh. 13.1 - List the disadvantages of nonparametric...Ch. 13.1 - Prob. 5ECh. 13.1 - Explain what is meant by the efficiency of a...Ch. 13.1 - Prob. 7ECh. 13.1 - For Exercises 7 through 12, rank each set of data....Ch. 13.1 - For Exercises 7 through 12, rank each set of data....
Ch. 13.1 - Prob. 10ECh. 13.1 - Prob. 11ECh. 13.1 - Prob. 12ECh. 13.2 - Clean Air An environmentalist suggests that the...Ch. 13.2 - Exercises 132 1. Why is the sign test the simplest...Ch. 13.2 - Prob. 2ECh. 13.2 - Prob. 3ECh. 13.2 - Prob. 4ECh. 13.2 - For Exercises 5 through 20, perform these steps....Ch. 13.2 - Prob. 6ECh. 13.2 - AID: 1825 | 12/01/2018 7. Annual Incomes for Men...Ch. 13.2 - Weekly Earnings of Women According to the Womens...Ch. 13.2 - Externships Fifty undergraduate students were...Ch. 13.2 - Lottery Ticket Sales A lottery outlet owner...Ch. 13.2 - Prob. 11ECh. 13.2 - Deaths due to Severe Weather A meteorologist...Ch. 13.2 - Prob. 13ECh. 13.2 - Television Viewers A researcher read that the...Ch. 13.2 - Prob. 15ECh. 13.2 - Exam Scores A statistics professor wants to...Ch. 13.2 - Prob. 17ECh. 13.2 - Effects of a Pill on Appetite A researcher wishes...Ch. 13.2 - Prob. 19ECh. 13.2 - Routine Maintenance and Defective Parts A...Ch. 13.2 - Prob. 21ECCh. 13.2 - Prob. 22ECCh. 13.2 - Prob. 23ECCh. 13.2 - 1, 8, 2, 6, 10, 15, 24, 33, 56, 41, 58, 54, 5, 3,...Ch. 13.2 - Prob. 25ECCh. 13.3 - School Lunch A nutritionist decided to see if...Ch. 13.3 - Prob. 1ECh. 13.3 - What is the parametric equivalent test for the...Ch. 13.3 - Prob. 3ECh. 13.3 - Lengths of Prison Sentences A random sample of men...Ch. 13.3 - Prob. 5ECh. 13.3 - Lifetimes of Handheld Video Games To test the...Ch. 13.3 - Prob. 7ECh. 13.3 - Winning Baseball Games For the years 19701993 the...Ch. 13.3 - Prob. 9ECh. 13.3 - Medical School Enrollments Random samples of...Ch. 13.3 - Prob. 11ECh. 13.3 - Student Participation in a Blood Drive Students in...Ch. 13.4 - Pain Medication A researcher decides to see how...Ch. 13.4 - Prob. 1ECh. 13.4 - Prob. 2ECh. 13.4 - Prob. 3ECh. 13.4 - For Exercises 3 and 4, find the sum of the signed...Ch. 13.4 - Prob. 5ECh. 13.4 - Prob. 6ECh. 13.4 - Prob. 7ECh. 13.4 - Prob. 8ECh. 13.4 - Prob. 9ECh. 13.4 - For Exercises 914, use the Wilcoxon signed-rank...Ch. 13.4 - Prob. 11ECh. 13.4 - For Exercises 914, use the Wilcoxon signed-rank...Ch. 13.4 - Prob. 13ECh. 13.4 - For Exercises 914, use the Wilcoxon signed-rank...Ch. 13.5 - Prob. 1ACCh. 13.5 - Prob. 1ECh. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 3ECh. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 5ECh. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 7ECh. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 9ECh. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.5 - Prob. 11ECh. 13.5 - For Exercises 1 through 12, use the Kruskal-Wallis...Ch. 13.6 - Tall Trees As a biologist, you wish to see if...Ch. 13.6 - Prob. 1ECh. 13.6 - Prob. 2ECh. 13.6 - Prob. 3ECh. 13.6 - Prob. 4ECh. 13.6 - Prob. 5ECh. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 7ECh. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 9ECh. 13.6 - Prob. 10ECh. 13.6 - Prob. 11ECh. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 13ECh. 13.6 - For Exercises 5 through 14, perform these steps....Ch. 13.6 - Prob. 15ECh. 13.6 - Daily Lottery Numbers Listed below are the daily...Ch. 13.6 - Prob. 17ECh. 13.6 - Random Numbers Random? A calculator generated...Ch. 13.6 - Prob. 19ECh. 13.6 - Gender of Shoppers Twenty shoppers are in a...Ch. 13.6 - Employee Absences A supervisor records the number...Ch. 13.6 - Skiing Conditions A ski lodge manager observes the...Ch. 13.6 - Prob. 23ECh. 13.6 - Prob. 25ECh. 13.6 - Speeding Tickets A police chief records the gender...Ch. 13.6 - Prob. 27ECh. 13.6 - Prob. 28ECh. 13.6 - Prob. 29ECCh. 13.6 - Prob. 30ECCh. 13.6 - Prob. 31ECCh. 13.6 - Prob. 32ECCh. 13.6 - Prob. 33ECCh. 13 - For Exercises 1 through 13, follow this procedure:...Ch. 13 - Prob. 13.2.2RECh. 13 - Prob. 13.2.3RECh. 13 - Record High Temperatures Shown here are the record...Ch. 13 - Hours Worked by Student Employees Student...Ch. 13 - Prob. 13.4.6RECh. 13 - Prob. 13.4.7RECh. 13 - Prob. 13.5.8RECh. 13 - Prob. 13.5.9RECh. 13 - Prob. 13.6.10RECh. 13 - Prob. 13.6.11RECh. 13 - NBA Scoring Leaders The scoring leaders for the...Ch. 13 - Prob. 13.6.13RECh. 13 - Prob. 13.6.14RECh. 13 - Prob. 1DACh. 13 - Prob. 2DACh. 13 - Prob. 3DACh. 13 - Determine whether each statement is true or false....Ch. 13 - Prob. 2CQCh. 13 - Determine whether each statement is true or false....Ch. 13 - Determine whether each statement is true or false....Ch. 13 - Prob. 5CQCh. 13 - Prob. 6CQCh. 13 - Prob. 7CQCh. 13 - Prob. 8CQCh. 13 - Prob. 9CQCh. 13 - Prob. 10CQCh. 13 - Prob. 11CQCh. 13 - Complete the following statements with the best...Ch. 13 - Prob. 13CQCh. 13 - Prob. 14CQCh. 13 - Prob. 15CQCh. 13 - Prob. 16CQCh. 13 - Textbook Costs Samples of students majoring in law...Ch. 13 - Prob. 18CQCh. 13 - Prob. 19CQCh. 13 - Prob. 20CQCh. 13 - Prob. 21CQCh. 13 - Prob. 22CQCh. 13 - Prob. 23CQCh. 13 - Prob. 24CQCh. 13 - Prob. 25CQCh. 13 - Prob. 26CQ
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- Find the equation of the regression line for the following data set. x 1 2 3 y 0 3 4arrow_forwardUrban Travel Times Population of cities and driving times are related, as shown in the accompanying table, which shows the 1960 population N, in thousands, for several cities, together with the average time T, in minutes, sent by residents driving to work. City Population N Driving time T Los Angeles 6489 16.8 Pittsburgh 1804 12.6 Washington 1808 14.3 Hutchinson 38 6.1 Nashville 347 10.8 Tallahassee 48 7.3 An analysis of these data, along with data from 17 other cities in the United States and Canada, led to a power model of average driving time as a function of population. a Construct a power model of driving time in minutes as a function of population measured in thousands b Is average driving time in Pittsburgh more or less than would be expected from its population? c If you wish to move to a smaller city to reduce your average driving time to work by 25, how much smaller should the city be?arrow_forwardTo determine whether talking to plants affects their health, a researcher conducts a study in which he talks to one group of five plants and does not talk to the second group of five plants. After two weeks, he records the number of blooms produced by each plant (the dependent measure of their health). The researcher finds that, on average, the five plants he talked to produced 4.3 blooms (SD = 2.2), while the five plants he did not talk to produced 3.2 blooms (SD = 2.0). (a) Perform an independent-samples t-test to determine whether talking to the plants significantly affected their health.arrow_forward
- Health care workers who use latex gloves with glove powder on a daily basis are particularly susceptible to developing a latex allergy. Each in a sample of 47 hospital employees who were diagnosed with a latex allergy based on a skin-prick test reported on their exposure to latex gloves. Summary statistics for the number of latex gloves used per week are x = 19.3 and s = 12.3. Complete parts (a) - (d). a. Give a point estimate for the average number of latex gloves used per week by all health care workers with a latex allergy. b. Form a 95% confidence interval for the average number of latex gloves used per week by all health care workers with a latex allergy. (Use integers or decimals for any numbers in the expression. Round to two decimal places as needed.) с. Gi a practical interpretation of the interval, part (b). A. One can be 95% confident that latex gloves cause allergies for all who use a number of gloves contained in the interval. B. One can be 95% confident that the average…arrow_forwardFor the following description of data, identify Who and Whatwere investigated and the population of interest. A researcher wondered whether drivers treat bicycle riders differently when they wear helmets. He rigged his bicycle with an ultrasonic sensor that could measure how close each car was that passed him. He then rode on alternating days with and without a helmet. Of the 4000 times that a car passed him, he found that when he wore his helmet, motorists passed 3.07 inches closer to him, on average, than when his head was bare. What is the Who in this study? That is, identify the cases under study.arrow_forwardHealth care workers who use latex gloves with glove powder on a daily basis are particularly susceptible to developing a latex allergy. Each in a sample of 47 hospital employees who were diagnosed with a latex allergy based on a skin-prick test reported on their exposure to latex gloves. Summary statistics for the number of latex gloves used per week are x = 19.7 and s = 12.1. Complete parts (a)-(d). a. Give a point estimate for the average number of latex gloves used per week by all health care workers with a latex allergy. 19.7 b. Form a 95% confidence interval for the average number of latex gloves used per week by all health care workers with a latex allergy. (16.24, 23.16) (Use integers or decimals for any numbers in the expression. Round to two decimal places as needed.) c. Give a practical interpretation of the interval, part (b). OA. One can be 95% confident that the average number of latex gloves used per week by all healthcare workers with latex allergy is greater than the…arrow_forward
- A recent study indicates that simply giving college students a pedometer can result in increased walking (Jackson & Howton, 2008). Students were given pedometers for a 12-week period, and asked to record the average number of steps per day during weeks 1, 6, and 12. The following data are similar to the results obtained in the study. Number of Steps (x1000) Week Participant I II III P A 6 8 10 24 B 4 5 6 15 C 5 5 5 15 G = 72 D 1 2 3 6 ΣX2 = 400 E 0 1 2 3 F 2 3 4 9 T = 18 T = 24 M = 30 SS = 28 SS = 32 SS = 40 Use a repeated-measures ANOVA with α = .05 to determine whether the mean number of steps changes significantly from one week to another. Compute η2 to measure the size of the treatment effect. Write a sentence demonstrating how a research report would present the results of the hypothesis test…arrow_forwardDoes cell phone use while driving impair driver reaction times? At the Univ. of Utah the times (in milliseconds) of 32 drivers using cell phones to depress the brake pedal were compared to the reaction times of 32 drivers who were listening to the radio. For the cell phone users the results were = 585.2, s = 89.6; for the radio listeners the results were = 533.7, s = 65.3. Determine a 95% confidence interval for μ-μ where μ is the mean reaction for drivers using cell phones. Use df = 57.arrow_forwardThe following are the cystatin C levels (mg/L) for the patients described in Exercise 15 (A-17).Cystatin C is a cationic basic protein that was investigated for its relationship to GFR levels. Inaddition, creatinine levels are also given. (Note: Some subjects were measured more than once.)Cystatin C (mg/L) Creatinine (mmol/L)1.78 4.69 0.35 0.142.16 3.78 0.30 0.111.82 2.24 0.20 0.091.86 4.93 0.17 0.121.75 2.71 0.15 0.071.83 1.76 0.13 0.122.49 2.62 0.14 0.111.69 2.61 0.12 0.071.85 3.65 0.24 0.101.76 2.36 0.16 0.131.25 3.25 0.17 0.091.50 2.01 0.11 0.122.06 2.51 0.12 0.062.34Source: Data provided courtesy of D. M. Z. Krieser, M.D.(a) For each variable, compute the mean, median, variance, standard deviation, and coefficient ofvariation.(b) For each variable, construct a stem-and-leaf display and a box-and-whisker plot.(c) Which set of measurements is more variable, cystatin C or creatinine? On what do you base youranswer?arrow_forward
- Health care workers who use latex gloves with glove powder on a daily basis are particularly susceptible to developing a latex allergy. Each in a sample of 45 hospital employees who were diagnosed with a latex allergy based on a skin-prick test reported on their exposure to latex gloves. Summary statistics for the number of latex gloves used per week are x = 19.5 and s = 12.1. Complete parts (a) - (d). a. Give a point estimate for the average number of latex gloves used per week by all health care workers with a latex allergy. 19.5 b. Form a 95% confidence interval for the average number of latex gloves used per week by all health care workers with a latex allergy. (Use integers or decimals for any numbers in the expression. Round to two decimal places as needed.)arrow_forwardThe following are the cystatin C levels (mg/L) for the patients described in Exercise 15 (A-17).Cystatin C is a cationic basic protein that was investigated for its relationship to GFR levels. In addition, creatinine levels are also given. (Note: Some subjects were measured more thanonce.) Cystatin C (mg/L) Creatinine (mmol/L) 1.78 4.69 0.35 0.14 2.16 3.78 0.30 0.11 1.82 2.24 0.20 0.09 1.86 4.93 0.17 0.12 1.75 2.71 0.15 0.07 1.83 1.76 0.13 0.12 2.49 2.62 0.14 0.11 1.69 2.61 0.12 0.07 1.85 3.65 0.24 0.10 1.76 2.36 0.16 0.13 1.25 3.25 0.17 0.09 1.50 2.01 0.11 0.12 2.06 2.51 0.12 0.06 2.34Source: D. M. Z. Krieser, M.D. Used with permission.(a) For each variable, compute the mean, median, variance, standard deviation, and coefficient ofvariation.(b) For each variable, construct a stem-and-leaf display and a box-and-whisker plot.(c) Which set of measurements is more variable, cystatin C or creatinine? On what do you baseyour answer? that question from…arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
Functions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage Learning
Functions and Change: A Modeling Approach to Coll...
Algebra
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Cengage Learning
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
Trigonometry (MindTap Course List)
Trigonometry
ISBN:9781337278461
Author:Ron Larson
Publisher:Cengage Learning
Hypothesis Testing - Solving Problems With Proportions; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=76VruarGn2Q;License: Standard YouTube License, CC-BY
Hypothesis Testing and Confidence Intervals (FRM Part 1 – Book 2 – Chapter 5); Author: Analystprep;https://www.youtube.com/watch?v=vth3yZIUlGQ;License: Standard YouTube License, CC-BY