Help | According to an online survey by Harris Interactive for job site CareerBuilder.com (InformationWeek.com, September 27, 2007), moi than half of IT workers say they have fallen asleep at work. The same is also true for government workers. Assume that the followin contingency table is representative of the survey results. Job Category Government Slept on the Job? Yes IT Professional Professional 155 256 No 145 144 a. Choose the competing hypotheses to determine whether sleeping on the job is associated with job category. O Hg: Sleeping on the job is independent of the job category.; HA- Sleeping on the job is dependent of the job category. O Hg: Sleeping on the job is dependent on the job category.; HA: Sleeping on the job is independent of the job category. b. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.) Test statistic < Prev. 10 of 10 Next > 曲 a o search

Help | According to an online survey by Harris Interactive for job site CareerBuilder.com (InformationWeek.com, September 27, 2007), moi than half of IT workers say they have fallen asleep at work. The same is also true for government workers. Assume that the followin contingency table is representative of the survey results. Job Category Government Slept on the Job? Yes IT Professional Professional 155 256 No 145 144 a. Choose the competing hypotheses to determine whether sleeping on the job is associated with job category. O Hg: Sleeping on the job is independent of the job category.; HA- Sleeping on the job is dependent of the job category. O Hg: Sleeping on the job is dependent on the job category.; HA: Sleeping on the job is independent of the job category. b. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.) Test statistic < Prev. 10 of 10 Next > 曲 a o search

Name: c. Find the p-value.O pvalue <0.01O 0.01s pvalue <0.025O 0.025 s p-va
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Description: c. Find the p-value.O pvalue <0.01O 0.01s pvalue <0.025O 0.025 s p-value <0.05O 0.05 < p-value <0.10O p-value 2 0.10d. At the 5% significance level, can you conclude that sleeping on the job depends on job category?O Yes, since the p-value is less t

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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According the the U.S. Census bureau, the percentage of Santa Ana residents with a bachelor's degree or higher is 14% and the percentage of Irvine residents with a bachelor's degree or higher is 68.5%. Suppose that the sample sizes were 1000 for the Santa Ana group and 1000 for the irvine group. Is there enough evidence to conclude that people who live in Irvine have a higher level of education compared to people living in Santa Ana?
Please advise. Keep on tossing a coin until one gets a head. List 2 possible outcomes from this sample.
Explain what the statements below mean:A)A Rasmussen Reports national survey of 1000 adult Americans found that 18% dreaded Valentine's Day. The margin of error for the survey was 4.5 percentage points with 95% confidence. B)A Gallup poll of 547 adults Americans employed full or part time asked, "Generally speaking, would you say your commute to work is - very stressful, somewhat stressful, not that stressful at all?" Gallup reported that 24% of American workers said that their commute was "very" or "somewhat" stressful. The margin of error was 4 percentage points with 95% confidence.
Every year during home football games the Carroll College fans do push-up contests to see how many they can do. Suppose that a curious stats student in the stands kept track of the number of push-ups completed for several students of both genders. Males 31 31 24 18 30 16 28 13 26 23 Females 16 11 10 1 26 26 6 9 16 32 Consider the hypothesis that males in this contest can do more pushups than females. Use an significance level to test the claim. The test statistic is Construct a 99% confidence interval for the mean of the differences between males and females.
There are 15 numbers on a list, and the smallest number is changed from 4 to 0.4.a) Is it possible to determine by how much the mean changes? If so, by how much does it change?b) Is it possible to determine the value of the mean after the change? If so, what is the value?c) Is it possible to determine by how much the median changes? If so, by how much does it change?d) Is it possible to determine by how much the standard deviation changes? If so, by how much does it change
webassign.net/web/Student/Assignment-Responses/submit?pos=10&dep=22704121&tags=autos A newspaper infographic titled "Social Media Jeopardizing Your Job?" summarized data from a survey of 1,825 recruiters and human resource professionals. The infographic indicated that 53% of the people surveyed had reconsidered a job candidate based on his or her social media profile. Assume that the sample is representative of the population of recruiters and human resource professionals in the United States. (a) Use the given information to estimate the proportion of recruiters and human resource professionals who have reconsidered a job candidate based on his or her social media profile using a 95% confidence interval. (Use a table or technology. Round your answers to three decimal places.) Give an interpretation of the interval in context. There is a 95% chance that the true proportion of recruiters and human resource professionals who have reconsidered a job candidate based on his or her social…
what statsistical test, if any, would be typically associated with a bar gragh
SIS Travel Agency, a nation wide local travel agency, offers special rates on summer perlod. The owner wants additional information on the ages of those people taking travel tours. A random sample of 50 customers taking travel tours last summer revealed these ages. 18 29 37 42 47 49 53 57 61 67 19 31 38 44 48 50 54 58 62 68 24 34 39 45 48 51 54 58 63 70 27 36 39 46 48 51 55 59 64 74 28 36 40 46 49 52 56 60 66 77 B. Determine the P15, P22, , P55, P77 of the frequency distribution and construct the graph.
A magazine invited women to visit their site to complete a surgery and 1500 respondents responses were recorded. When asked whether they would rather have more money or more sleep, 88% responded more money and 12% responded more sleep. How do I answer the questions with this information? 1) identify the variable in this study. 2) is the variable quantitative or qualitative? 3) what is the sample in this study? 4) what is the implied population?
Sierra College students enrolled in an online Elementary Statistics course were asked to participate in an anonymous onlne survey. The survey asked the students "Which type of device will you primarily use to access your online course in Canvas?". Of the 152 students who answered this question, 20 responded "a desktop computer", 121 responded "a laptop computer", 6 responded "a smartphone", and 5 responded "a tablet". The Sierra College Mathematics Department believes that less than 5% of students enrolled in an online Elementary Statistics course primarily uses a smartphone to access their online course in Canvas. Use the data collected in the survey to conduct a hypothesis testing procedure to test this belief. What conclusion should be reached according to the results of this hypothesis test?
A study was conducted to determine how people get jobs. The table list date from 400 randomly selected subjects. The data are bases on results from the National centter for Career Strategies. Job source of survey respondent FREQUENCIES HELP-WANTED ads 56 EXECUTIVE SEARCH FIRMS 44 NETWORKING 280 MASS MAILING 20 TOTAL 1. What percentage of the respondents got job by either help-wanted ads or mass mailing? 2. What percentage of the respondent got jobs from networking?