Researchers were investigating food insecurity, which is having a disruption of food intake because of lack of money or other resources. Participants were asked whether or not they consideredthemselves to be food insecure and their highest achieved level of education. Highest level of education was broken down into the following categories:No High School diplomaHigh School diplomaCollege degree or 2 years of UniversityBachelor's degreeMaster's degreePh.D or Professional degreeAccording to PROOF in 2020, approximately 12.7% of households in Canada are food insecure. The researchers were interested in whether their sample was consistent with the reports from PROOFregarding how many households in Canada were food insecure. What is the degrees of freedom to conduct this analysis?01O 2O 5

It is needed to test, whether the researcher’s sample was consistent with reports.

Answered: ng 100d insecurity, which is having a…

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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You are interested in comparing sleep habits of elementary school children. Suppose you have agroup of eighth graders. You asked them in July to estimate about how many hours of sleep they get pernight, on average. You asked those same individuals the same question again in November, during theschool year. Which is the most appropriate test to use?
1. The percentage of 12- to 17-year-olds who reported talking at least once in the past year with their parents about the dangers of drug, tobacco, or alcohol is 60% nationally. A state youth council believes this proportion is higher in their state, where there has been an intense media campaign about this issue. A survey of randomly chosen students from across the state shows 1032 of 1642 students reporting they are having these conversations with their parents. Is there evidence that the percent of students using drugs, tobacco or alcohol in this state is above the national rate?
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In June 2015, Gallup conducted a poll of a random sample of 14,683 adults to determine the well-being of people living in the United States. One question asked, "Did you exercise at least 30 minutes for 3 or more days in the past week?" In the survey, 58.9% of males and 52.7% of females responded yes to this question. Which of the following is true about this scenario? A. O 58.9% and 52.7% are both parameters. B. O 58.9% and 52.7% are both statistics. C. If we took another random sample of 14,683 adults, we would expect to get the exact same results.
1. Determine if the following is: SURVEY,| EXPERIMENTATION, | OBSERVATION ______a. A student researcher aims to know the favored vaccine of top government officials. So, the researcher produced a list of questions and interviewed several officials regarding their vaccine of preference. Majority did not want to get vaccinated with a vaccine with a poor efficiency rate. _____b. A boy wants to discover the percentage of his followers in Twitter that have a high propensity for believing fake news. The boy started a group in Twitter and invited several of his acquaintances. She then posted fake news and documented the reactions. _____c. The U.S. President wishes to know the number of COVID-19 cases in the population if the quarantine limitations are modified. The president sets the following quarantine levels: ECQ, MECQ, GCQ. The authority then modified the quarantine level randomly every month while tracking the oscillations in the number of COVID-19 cases.
Med School 2011 According to the Association ofAmerican Medical Colleges, only 46% of medical schoolapplicants were admitted to a medical school in the fallof 2011.5Upon hearing this, the trustees of StrivingCollege expressed concern that only 77 of the 180students in their class of 2011 who applied to medicalschool were admitted. The college president assured the trustees that this was just the kind of year-to-year fluctua-tion in fortunes that is to be expected and that, in fact, the school’s success rate was consistent with the nationalaverage. Who is right?a) What are the hypotheses?b) Check the conditions and find the P-value.c) Are the trustees right to be concerned, or is thepresident correct? Explain.
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?
The Board of Visitors hypothesize that self-esteem is increased by the time spent in college. After completing their junior year, a random sample of students was selected and given the Self-Esteem Adult Survey (SEAS). After completing their senior year they were again tested. What can be conclude with an a of 0.01? junior senior 5.9 2.1 7.2 7.5 7.4 6.9 6.8 6.3 8.5 5.5 6.2 6.4 7.3 4.6 5.2 5.2 a) What is the appropriate test statistic? Related-Samples t-test b) Condition 1: junior Condition 2: senior c) Input the appropriate value(s) to make a decision about Ho. p-value = ; Decision: --Select--- d) Using the SPSS results, compute the corresponding effect size(s) and indicate magnitude(s). If not appropriate, input and/or select "na" below. ; Magnitude: ; Magnitude: ---Select--- d = --Select--- 2 = e) Make an interpretation based on the results. O Students showed significantly less self-esteem in their senior year as opposed to their junior year. O Students showed significantly more…
Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep. This condition results in lack of sleep and extreme fatigue during waking hours. A current estimate is that 16.3 million out of the 312.7 million Americans suffer from sleep apnea, or approximately 5.2%. A safety commission is concerned about the percentage of commercial truck drivers who suffer from sleep apnea. They do not have any reason to believe that it would be higher or lower than the population’s percentage. To test the claim that the percentage of commercial truck drivers who suffer from sleep apnea is not 5.2%, a simple random sample of 380380 commercial truck drivers is examined by a medical expert, who concludes that 29 suffer from sleep apnea. Does this evidence support the claim that the percentage of commercial truck drivers who suffer from sleep apnea is not 5.2%? Use a 0.01 level of significance. Step 1 of 3 : State the null and alternative hypotheses for the test.…
According to a study conducted by a statistical organization, the proportion of people who are satisfied with the way things are going in their lives is 0.88. Suppose that a random sample of 100 people is obtained. Complete parts (a) through (e) below. (a) Suppose the random sample of 100 people is asked, "Are you satisfied with the way things are going in your life?" Is the response to this question qualitative or quantitative? Explain. A. The response is qualitative because the responses can be classified based on the characteristic of being satisfied or not. B. The response is quantitative because the number of people satisfied can be counted. C. The response is quantitative because the responses can be classified based on the characteristic of being satisfied or not. D. The response is qualitative because the number of people satisfied can be counted. (b) Explain why the sample proportion, p, is a random variable. What is the source…

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