A study published in the American Journal of Public Health was conducted to determine whether the use of seat belts in motor vehicles depends on ethnic status in San Diego County. A sample of 792 children treated for injuries sustained from motor vehicle accidents was obtained, and each child was classified according to (1) ethnic status (Hispanic or non-Hispanic) and (2) seat belt usage (worn or not worn) during the accident. The number of children in each category is given in the table below. Hispanic Non-Hispanic Seat belts worn 31 148 Seat belts not worn 283 330 Referring to these data, the calculated test statistic is: Seleccione una: A. nearly -0.1368 O B. approximately -0.9991 O C. approximately 72.8063 D. about 48.1849

A study published in the American Journal of Public Health was conducted to determine whether the use of seat belts in motor vehicles depends on ethnic status in San Diego County. A sample of 792 children treated for injuries sustained from motor vehicle accidents was obtained, and each child was classified according to (1) ethnic status (Hispanic or non-Hispanic) and (2) seat belt usage (worn or not worn) during the accident. The number of children in each category is given in the table below. Hispanic Non-Hispanic Seat belts worn 31 148 Seat belts not worn 283 330 Referring to these data, the calculated test statistic is: Seleccione una: A. nearly -0.1368 O B. approximately -0.9991 O C. approximately 72.8063 D. about 48.1849

Name: A study published in the American Journal of Public Health was conduc
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: A study published in the American Journal of Public Health was conducted to determine whether the use of seat belts in motor vehicles depends on ethnic status inSan Diego County. A sample of 792 children treated for injuries sustained from motor veh

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

Related questions

Q: Bradley Nixon is interested in the study habits of online math students. As part of his study, he…

A: Given that, Bradley Nixon is interested in the study habits of online math students. He randomly…

Q: Given a data set consisting of 33 unique whole number observations, its five-number summary is:…

A: From the provided information, The data consist of 33 unique whole number that is (n) = 33 The five…

Q: Calculate the conditional distribution of Facebook use for each campus setting.

A: The Pennsylvania State University has its main campus in the town of State College and more than 20…

Q: Wolak, Mitchell, and Finkelhor (2002) used a survey of 1,501 adolescents to examine online…

A: Research design can be broadly classified into two categories named quasi-experimental research…

Q: Gift Card Sales. For the holiday season of 2017, nearly 59 percent of consumers planned to buy gift…

A: 1) from the above output the regression equation is : y=-3,9999+0.000213×Annual Income +…

Q: The following table classifies 100 individuals using two variables, gender and college attended.…

A: A two-way classification table of 100 individuals based on gender and college attended is provided.

Q: 1) Using the data from the American Community Survey (IPUMS), the Pew Research Center reported that…

Q: Among the students who plan to go to graduate school, what percentage indicated "Other" majors?

A: Given that Go to graduate school=280 Go to graduate school and other majors=126 Total=800

Q: A consumer survey was conducted to examine patterns in ownership of tablet computers, cellular…

Q: Consider the following: at Bernhardt College, 200 (of the 3,000) students were polled and asked how…

A: From the given information, At Bernhardt College, 200 (of the 3,000) students were polled and asked…

Q: College administrations are continually perplexed about how to deal with hazing issues on their…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…

Q: (d) () (ii) (ii) Write down the x* test statistic. Write down the p-value. State the conclusion for…

A: Solution: The observed frequency table is

Q: 3) A researcher took an SRS of 4 high schools from a region with 29 high schools for a study on the…

A: Please go through the below answerExplanation:

Q: Identify the population, the sample, and any population parameters or sample statistics in the given…

Q: A survey of 150150 freshmen business students at a local university produced the results listed…

A: A survey of 150150 freshmen business students at a local university produced the results listed…

Q: Bryan is conducting research on personality and health behaviors of college students. If he asks…

A: According to the given information, we have Given that Bryan is conducting research on personality…

Q: 313

Q: Determine the regression equation. (Negative values should be indicated by a minus sign. Round your…

A: Police (X) Crimes (Y) (x-xbar) (x-xbar)^2 (y-ybar) (y-ybar)^2 (x-xbar)*(y-ybar) 19 16 -2.25 5.0625…

Q: 18 b. What is the null hypothesis? c. What is the value of t obtained. d. What is the…

A: Step 1 of 4 16. A governmental ecology agency hired a nurse to investigate the impact of a lead…

Q: We want to learn about the country of origin, gender, NYC borough of residence, ethnicity, and age…

A: A sample is a subset of a population, whereas a population is a full set that represents every…

Q: A consumer survey was conducted to examine patterns in ownership of tablet computers, cellular…

A: Let T represents the people who owned tablet computers, C represents the cellular phone and B…

Q: What decisions can be made on the basis of The Harris Poll survey that measures the reputations of…

Q: Consider that in a retrospective cohort study involving job type and heart disease among railroad…

Q: The particular set of people involved in a study intended to be representative of a larger…

A: The particular set of people involved in a study intended to be representative of a larger…

Q: A Doctor is interested in the proportion of Lyon county residents who were infected with covid-19…

A: a) It is given that the Doctor is interested in the proportion of Lyon county residents who were…

Q: d) Republican given that the person is Male? e) Female given that the person is an Independent? f)…

A: d)The total number of people is .

Q: A certain company will purchase the house of any employee who is transferred out of state and will…

A: (a)

Q: Alcohol abuse has been described by college presidents as the number one problem on campus, and it…

A: Given that Sample size n =10904 Favorable cases x =2486

Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

Topic Video

Question

A study published in the American Journal of Public Health was conducted to determine whether the use of seat belts in motor vehicles depends on ethnic status in
San Diego County. A sample of 792 children treated for injuries sustained from motor vehicle accidents was obtained, and each child was classified according to (1)
ethnic status (Hispanic or non-Hispanic) and (2) seat belt usage (worn or not worn) during the accident. The number of children in each category is given in the table
below.
Hispanic
Non-Hispanic
Seat belts worn
31
148
Seat belts not worn
283
330
Referring to these data, the calculated test statistic is:
Seleccione una:
O A. nearly -0.1368
B. approximately -0.9991
O C. approximately 72.8063
O D. about 48.1849

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Proportions$

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

A certain company will purchase the house of any employee who is transferred out of state and will handle all details of reselling the house. The purchase price is based on two assessments, one assessor being chosen by the employee and one by the company. Based on the sample of eight assessments shown, do the two assessors agree? Use the .05 level of significance. Assessments of Eight Homes ($ thousands) Assessed by Home 1 Home 2 Home 3 Home 4 Home 5 Home 6 Home 7 Home 8 Company 320 347 456 277 294 281 540 749 Employee 310 347 480 287 310 295 560 775 Click here for the Excel Data File (a) Choose the appropriate hypotheses. Assume d = company assessed value – employee assessed value. multiple choice 1 H0: μd = 0 versus H1: μd ≠ 0. H0: μd ≠ 0 versus H1: μd = 0. (b) State the decision rule for .05 level of significance. (Round your answers to 2 decimal places. A negative value should be indicated by a minus sign.) Reject the null hypothesis if tcalc < or…
A certain company will purchase the house of any employee who is transferred out of state and will handle all details of reselling the house. The purchase price is based on two assessments, one assessor being chosen by the employee and one by the company. Based on the sample of eight assessments shown, do the two assessors agree? Use the .01 level of significance. Assessments of Eight Homes ($ thousands) Assessed by Home 1 Home 2 Home 3 Home 4 Home 5 Home 6 Home 7 Home 8 Company 328 350 455 278 290 285 535 745 Employee 318 345 470 285 310 280 525 765 a) Choose the appropriate hypotheses. Assume d = company assessed value – employee assessed value. H0: μd = 0 versus H1: μd ≠ 0. H0: μd ≠ 0 versus H1: μd = 0. (b) State the decision rule for .01 level of significance. (Round your answers to 2 decimal places. A negative value should be indicated by a minus sign.) Reject the null hypothesis if tcalc < or tcalc > . (c-1) Find the test statistic tcalc.…
A researcher is interested in factors related to academic performance of students. She hypothesized that for undergraduate students, there is an association between academic majors (STEM, Business, Education, Nursing) and amount of time spent studying each week (less than 3 days, 3 to 6 days, everyday). To test her hypothesis, she randomly selected 1000 undergraduate students from various colleges/universities in Texas, and then classified each participant according to their major and amount of study time each week. For her study, she found test-statistic of 23.75 and a p-value of 0.0006. Using this information, fill in the necessary information below for her test. Distribution used: a. chi-square distribution, 3 degrees of freedom b. chi-square distribution, 4 degrees of freedom c. chi-square distribution, 6 degrees of freedom d. chi-square distribution, 12 degrees of freedom
Alcohol abuse has been described by college presidents as the number one problem on campus, and it is an important cause of death in young adults. How common is it? A survey of 10,904 randomly selected U.S. college students collected information on drinking behavior and alcohol-related problems. The researchers defined “frequent binge drinking” as having five or more drinks in a row three or more times in the past two weeks. According to this definition, 2486 students were classified as frequent binge drinkers. Construct and interpret a 99% confidence interval for the proportion of students who are classified as binge drinkers. (Use the four-step process and Table A to get your z* value.) Using the interval that you calculated in the last question, conclude in context for the question.
A study identified Bridgeport, Connecticut, San Jose, California, Washington, D.C., and Lexington Park, Maryland as the four U.S. cities with the highest percentage of millionaires. The following data show the following number of millionaires for samples of individuals from each of the four cities. Millionaire Yes No Bridgeport, CT 49 451 % % O Ho: PB #PL# PN* PW = San Jose, CA % % 40 260 Ha: : Not all population proportions are equal. City (a) What is the estimate of the percentage of millionaires in each of these cities? (Round your answers to two decimal places.) Bridgeport, CT San Jose, CA Washington, D.C. Lexington Park, MD H₂: : All population proportions are equal. Washington, D.C. Lexington Park, MD O Ho: At least two of the population proportions are equal. Ha: : None of the population proportions are equal. (b) Using a 0.05 level of significance, test for the equality of the population proportion of millionaires for these four cities. State the null and alternative…
Find the estimate and the associated variance estimate for the population parameters in each of the following situation: a. Proportion of managers who like the policy. b. Proportion of clerical workers who like the policy. c. Proportion of wage earners who like the policy. 2 d. Difference between the proportion of managers who like the policy and the proportion of managers who dislike the policy.
A report included data from a study in which 789 people in a representative sample of college students age 18 to 24 were asked how they perceive their money management skills. Possible responses were excellent, good, average, not very good, and poor. Each student in the sample was also classified by sex, resulting in the data in the table. Perception of Money Management Skills Not Very Good Excellent Good Average Poor Male 102 138 88 17 8 Female 81 193 136 22 4 Is there convincing evidence that there is an association between sex and how students perceive their money management skills? Test the relevant hypotheses using a significance level of a = 0.05. State the appropriate null and alternative hypotheses. O Ho: The proportions falling into each of the four perceptions of money management skills are the same for both sexes. H: The proportions falling into each of the four perceptions of money management skills are not the same for both sexes. O Ho: There is an association between sex…
The population of ages at inauguration of all U.S. Presidents who had professions in the military is 62, 46, 68, 64, 57. Why does it not make sense to construct a histogram for this data set? A.This data set would yield a histogram that is not bell-shaped. B.Adequate class boundaries for a histogram cannot be found with this data set. C.With a data set that is so small, the true nature of the distribution cannot be seen with a histogram. D.There must be an even number of data values in the data set to create a histogram.
A certain company will purchase the house of any employee who is transferred out of state and will handle all details of reselling the house. The purchase price is based on two assessments, one assessor being chosen by the employee and one by the company. Based on the sample of eight assessments shown, do the two assessors agree? Use the .01 level of significance. Assessments of Eight Homes ($ thousands) Assessed by Home 1 Home 2 Home 3 Home 4 Home 5 Home 6 Home 7 Home 8 Company 330 345 452 270 298 286 537 744 Employee 317 350 473 280 307 283 523 769 Click here for the Excel Data File (a) Choose the appropriate hypotheses. Assume d = company assessed value – employee assessed value. multiple choice 1 H0: μd = 0 versus H1: μd ≠ 0. H0: μd ≠ 0 versus H1: μd = 0. (b) State the decision rule for .01 level of significance. (Round your answers to 2 decimal places. A negative value should be indicated by a minus sign.) Reject the null hypothesis if tcalc < or…
A consumer survey was conducted to examine patterns in ownership of tablet computers, cellular telephones, and Blu-ray players. The following data were obtained: 311 people had tablet computers, 236 had cell phones, 265 had Blu-ray players, 65 had all three, 62 had none, 92 had cell phones and Blu-ray players, 57 had cell phones but no computers or Blu-ray players, and 108 had computers and Blu-ray players but no cell phones. (Round your answers to one decimal place.) A) What percent of people surveyed owned a cell phone? B) What percent of the people surveyed owned only a cell phone?
A survey of 400 school empl yielded the following information: 295 were instructors, 215 were full-time faculty, and 170 ofthe instructors were full-time faculty. How many of the 400 surveyed school employees were instructors or were full-time faculty?
A consumer survey was conducted to examine patterns in ownership of tablet computers, cellular telephones, and Blu-ray players. The following data were obtained: 315 people had tablet computers, 236 had cell phones, 265 had Blu-ray players, 69 had all three, 64 had none, 94 had cell phones and Blu-ray players, 55 had cell phones but no computers or Blu-ray players, and 104 had computers and Blu-ray players but no cell phones. (Round your answers to one decimal place.) (a) What percent of the people surveyed owned a cell phone? % (b) What percent of the people surveyed owned only a cell phone? %