An education council says that 22% of undergraduates do not work, 26 % work 1 to 20 hours per week, 18% work 21 to 34 hours per week, and 34% work 35 or more hours per week. You randomly select 120 college students and gather the results shown in the table below. At alpha = 0.01 can you reject the council`s claim. Response Did not work 29 Work 1 to 20 hours 26 Work 21 to 34 hours 25 Work 35 or more hours 40 State the null and alternative hypothesis Give the p-value Give a conclusion for the claim
Q: ..... ner her right hand or her left hand, what proportion of correct responses would be expected if…
A:
Q: THE MANAGER OF A SERVICE STATION IS IN THE PROCESS OF ANALYZING THE NUMBER OF TIMES CAR OWNERS…
A: For the given data perform t test for one population mean
Q: elved are tracked using sortware that can tell the e-mali sender when, where, and on what type of…
A:
Q: A research group conducted an extensive survey of 3052 wage and salaried workers on issues ranging…
A: Find z-critical value:…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Given data in a science fair project Emily conducted an experiment in which she tested professional…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: From given data we have : n=331 x=158
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: (a) Obtain the proportion of correct responses that would be expected if the random guesses made…
Q: c. Using Emily's sample results, construct a 90% confidence interval estimate of the proportion of…
A: The best point estimate of the therapists success rate is 0.481.
Q: A market researcher for a consumer electronics company wants to stud the media viewing behavior of…
A: From the provided information,Confidence level = 84%
Q: According to a Pew Research Center nationwide telephone survey of American adults conducted by phone…
A:
Q: it is claimed that 60% of stats professors like shirts. in a survey of 53 professors, 36 likes them.…
A: Stating the appropriate null and alternative hypotheses:Based on the study, it was found that 60% of…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Given: Number of events (x) = 152 Number of trials (x) = 326
Q: 2. From a business class of 16 equally capable students using programmed materials, 5 are selected…
A: Given : Claim : additional instruction affects the average grade.
Q: Alexis surveys a random sample of 80 students at his school and finds that 22 of themusually walk to…
A: We can find the answer as below
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Given:1. Emily conducted an experiment with 304 trials.2. She used a coin toss to select either her…
Q: In 2016, the New York Times reported that the average American spent 50 minutes per day on Facebook,…
A: From the given information, AverageFacebook=50 Average reading, exercising, or actually socializing…
Q: Researchers believe that skipping breakfast can lead to a greater prevalence of fatigue in…
A: Solution: Given: Researchers believe that skipping breakfast can lead to a greater prevalence of…
Q: Do lure colors influence Pacific halibut's desire to take the bait? To find out, researchers…
A: The conclusion can be applied to the population of halibut at the fish farm.
Q: a. Given that Emily used a coin toss to select either her right hand or her left hand, what…
A: a. When a coin is tossed there are two possible outcomes either right or left.
Q: A survey was conducted to assess the preference of people to reopen LA economy after the extended…
A: A survey was conducted to assess the preference of people to reopen LA economy after the extended…
Q: A cancer researcher believes that there may be an increase in the life expectancy of women diagnosed…
A: we know that applications of the paired sample t-test include case-control studies or…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: a. The probability of head and tails are same as 0.5.
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A:
Q: A researcher examined automobile accidents by studying whether drivers had been drinking alcohol…
A: In this context, the researchers interested to study whether drivers had been drinking alcohol and…
Q: An experimenter investigated the effects of blue light exposure on people’s sleep quality.…
A: In the given research problem, there are two independent samples- Blue light and No Blue light. The…
Q: USA Today surveyed a random sample of 4787 Americans that resulted in 1148 stating that they make no…
A: First, we need to calculate the proportion of Americans who make no purchases using cash in a…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Given Data Sample Size, n = 342 Number of successes, x = 156.0 Significance level,…
Q: A 2007 New York Times poll found that 31% of Americans attend religious services every week, 12%…
A:
Q: Dolly the sheep, the worlds first mammal to be cloned, was introduced to the public in 1997. In a…
A:
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Given Information: Probability (p) of a head or a tail when a coin is being tossed = 1/2 = 0.5…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Given: Sample size n = 356 Selected sample x=167
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A:
Q: People who work out vigorously for an hour or more experience loss of electrolytes such as calcium,…
A: The following information has been provided: Sample 1 = Water Sample 2 = Sports Drink…
Q: In a science fair project. Emily conducted an experiment in which she tested professional touch…
A: The question is about Sample proportion Given : No. of trials ( n ) = 329 No. of times therapist…
Q: A researcher is curious to see if the amount of time spent on social media influences how often…
A: Since, it is not mentioned which question to be answered, we'll be answering the first question…
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Sample size (n) = 342 Selected sample (x) = 161
Q: Rhianna hears that watching ASMR videos on YouTube can help with insomnia. She conducts a sleep…
A: A double blind experiment means the experiment in which neither the participants nor the…
Q: Sexual harassment of college students. A survey of 2036 undergraduate college students aged 18 to 24…
A: The random variable students say they have encountered some type of sexual harassment follows normal…
Q: 2. In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: Hypothesis testing and confidence interval
Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…
A: (a) Obtain the proportion of correct responses that would be expected if the random guesses made…
Q: In 2016, the New York Times reported that the average American spent 50 minutes per day on Facebook,…
A: Let x¯1 and x¯2 be the sample mena time spent on Facebook and Other activities respectively. x¯1=50…
An education council says that 22% of undergraduates do not work, 26 % work 1 to 20 hours per week, 18% work 21 to 34 hours per week, and 34% work 35 or more hours per week. You randomly select 120 college students and gather the results shown in the table below. At alpha = 0.01 can you reject the council`s claim.
|
Response |
|
|
Did not work |
29 |
|
Work 1 to 20 hours |
26 |
|
Work 21 to 34 hours |
25 |
|
Work 35 or more hours |
40 |
|
State the null and alternative hypothesis |
|
|
Give the p-value |
|
|
Give a conclusion for the claim |
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 4 images
- In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 331 trials, the touch therapists were correct 159 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? (Type an integer or decial. Do not round)In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 310 trials, the touch therapists were correct 149 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? (Round to three decimal places as needed.) c. Using Emily's sample results, construct a 95% confidence interval estimate of the proportion of correct responses made by touch therapists. |In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 354 trials, the touch therapists were correct 170 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? nothing (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? nothing (Round to three decimal places as needed.) c. Using Emily's sample results, construct a 95% confidence interval estimate of the proportion of correct…In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 312 trials, the touch therapists were correct 151 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? (Round to three decimal places as needed.) c. Using Emily's sample results, construct a 90% confidence interval estimate of the proportion of correct responses made by touch therapists.A report describes a survey of 251 adult Americans. Participants in the survey were asked how often they disinfect their phone and were asked to respond with one of the following categories: more than once a week, once a week, every other, week, every three weeks, or less often than every three weeks. For this group, 9% responded more than once a week, 52% responded once a week, 26% responded every other week, 6% responded every three weeks, and 7% responded less often than every three weeks. Fill in the table below with the relative frequency distributions. How Often? Relative Frequency More than once a week Once a week Every other week Every three weeks Less often than every three weeksTHE MANAGER OF A SERVICE STATION IS IN THE PROCESS OF ANALYZING THE NUMBER OF TIMES CAR OWNERS CHANGE THE OIL IN THEIR CARS. SHE BELIEVES THAT THE AVERAGE MOTORIST CHANGES HIS OR HER CAR'S OIL LESS FREQUENTLY THAN RECOMMENDED BY THE OWNER'S MANUAL (TWO TIMES PER YEAR). IN A PRELIMINARY SURVEY SHE ASKED 14 CAR OWNERS HOW MANY TIMES THEY CHANGED THEIR CARS' OIL IN THE LAST 12 MONTHS. THE RESULTS ARE 1, 1, 2, 0, 3, 3,0, 1, 0, 1, 2, 3, 3, AND 1. 2.1 Does this data provide sufficient evidence at the 10% significance level to indicate that the manager is correct? 2.2 Ho: H₁: Rejection region: Test statistic: Decision: Conclusion: What condition is required in order to analyze this data using a t-test?In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 329 trials, the touch therapists were correct 157 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? 0.5 (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? 0.477 (Round to three decimal places as needed.) c. Using Emily's sample results, construct a 95% confidence interval estimate of the proportion of correct responses made by touch therapists.According to a job website, each job opening on average attracted 250 résumés in 2016. The job market improved in 2017 compared to 2016, which means that more people will likely be switching jobs but also fewer unemployed workers remain in the job market. To find out which trend is stronger, a random sample of 20 employers in a region was taken. Each employer reported how many résumés they received in 2017 for each job opening. Their answers are shown in the accompanying table. Using a = 0.05, complete parts a through d. Click the icon to view the data on résumés received. a. State the null and alternative hypotheses. Determine the null hypothesis, Ho, and the alternative hypothesis, H₁. Ho: H₁: (Type integers or decimals. Do not round.)In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 303 trials, the touch therapists were correct 144 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? c. Using Emily's sample results, construct a 90% confidence interval estimate of the proportion of correct responses made by touch therapists. d. What do the results suggest about the ability of touch therapists to select the…In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 307 trials, the touch therapists were correct 143 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? 0.5 (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? (Round to three decimal places as needed.)In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 275 trials, the touch therapists were correct 127 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? 0.5 (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? (Round to three decimal places as needed.)After having one group of athletes run a lap, and a different group throw the shotput, the university track coach took the pulse rates of both groups. Is this an observational study, or an experiment?SEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. FreemanMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman