Based on the study below, identify the nature of the study, indpenedent variables, and control variables.
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A: Solution-: Which of the following study designs is most efficient in studying a rare exposure?(A)…
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Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…
A: Given: n1=34 , n2=33, x1=15.2, x2=19.5, σ1=7.6, σ2=4.8 The hypothesis that can be derived is: H0:…
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A: Introduction: It is required to identify the correct option.
Q: A study prospectively examined whether sleep-disordered breathing was associated with an increased…
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Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…
A: From the provided information,
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Q: I need help with finding the P-value
A: The test statistic is, z=x¯1-x¯2σ12n1+σ22n2=15.2-19.76.8230+4.8234=-4.51.48962424529=-3.0209≈-3.02…
Q: A study prospectively examined whether sleep-disordered breathing was associated with an increased…
A: Here it is needed to test, whether the study finding give evidence of a significant difference of…
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Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…
A: a) The level of significance is 0.05.
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Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…
A: The provided sample means are shown below: Xˉ1=15.2\bar X_1 = 15.2 (For older people) Xˉ2=19.5\bar…
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A: Solution: The given table of data is
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A: Given: The data given is: CMC…
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Q: Education influences attitude and lifestyle. Differences in education are a big factor in the…
A: For age 65 and older : Sample Mean 1 (Xˉ1)(\bar X_1) = 15.215.2 Population Standard Deviation…
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Based on the study below, identify the nature of the study, indpenedent variables, and control variables.
Students' attitudes toward online learning in the midst of the Covid-19 pandemic: A study of junior, senior high school, and college students in a remote area.
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- Highway Signs. A driver’s ability to detect highway signs is an important consideration in highway safety. In his dissertation Highway Construction Safety and the Aging Driver (1994), Solomon Younes investigated the distance at which drivers can first detect highway caution signs. This distance is called the detection distance. An experiment was conducted to determine the effects that sign size and sign material have on detection distance. Four drivers were randomly selected for each combination of sign size (small, medium, and large), and sign material (1, 2, and 3). Each driver covered the same stretch of highway at a constant speed during the same time of day, and the detection distance (in feet) was determined for the driver’s assigned caution sign. The data in the following table are based on the results of the experiment. a. the response variable b. the factors c. the levels of each factor d. the number of treatment combinations e. the experimental units f. the number of…One study of cell phones and the risk of brain cancer looked at a group of 469 people who have brain cancer. The investigators then asked about the use of cell phones. Result: “Our data suggest that the use of hand- held cellular phones is not associated with risk of brain cancer. B . Based on this study, can you determine that cellular use does not CAUSE brain cancer? Why or why not?Study 1: A study of 300 high school students was done. Half of them were instructed to drink soda every day. The other half was instructed to not drink soda at all. After one month, the half that were drinking soda had gained an average of five pounds more than the half that did not drink soda. a. Is this a controlled study? Why or why not?
- Education influences attitude and lifestyle. Differences in education are a big factor in the "generation gap." Is the younger generation really better educated? Large surveys of people age 65 and older were taken in n1 = 38 U.S. cities. The sample mean for these cities showed that x1 = 15.2% of the older adults had attended college. Large surveys of young adults (age 25 - 34) were taken in n2 = 37 U.S. cities. The sample mean for these cities showed that x2 = 18.1% of the young adults had attended college. From previous studies, it is known that ?1 = 6.4% and ?2 = 4.8%. Does this information indicate that the population mean percentage of young adults who attended college is higher? Use ? = 0.05. What is the value of the sample test statistic? (Test the difference ?1 − ?2. Round your answer to two decimal places.)=__(c) Find (or estimate) the P-value. (Round your answer to four decimal places.)=__Seattle Grace Medical Center. As part of a long-term study of individuals 65 years of age or older, doctors at the Seattle Grace Medical Center in Washington state investigated the relationship between state of residence and depression. A sample of 60 individuals, all in reasonably good health, was selected; 20 individuals were residents of Texas, 20 were residents of Washington state, and 20 were residents of South Carolina. Each of the individuals sampled was given a standardized test to measure depression. The data collected follow; higher test scores indicate higher levels of depression. These data are contained in the attached data file SeattleGrace1. A second part of the study considered the relationship between state of residence and depression for individuals 65 years of age or older who had a chronic health condition such as diabetes and/or high blood pressure. A sample of 60 individuals with such conditions was identified. Again, 20 were residents of Texas, 20 were residents…In a survey of 1220 adults in a country, 58% said the country's leader should release all medical information that might affect their ability to serve. The study is observational, an experiment, because it applies does not apply a treatment to the adults.
- The GHQ is a well-known instrument for measuring minor psychological distress. The scale asks whether the respondent has experienced a particular symptom or behavior recently. Higher scores are associated with worst mental health. Past research has demonstrated that being of lower socioeconomic status was also associated with poorer mental health. The data are below: Participant Financial Security GHQ 1 20 25 2 18 23 3 18 17 4 19 35 5 19 18 6 18 24 7 19 24 8 14 25 9 10 27 10 7 50 i just need help on the blanks in the picture thankyouComputer-mediated communication (CMC) is a form of interaction that heavily involves technology (e.g., instant messaging, email). A study was conducted to compare relational intimacy in people interacting via CMC to people meeting face-to-face (FTF). Participants were 48 undergraduate students, of which half were randomly assigned to the CMC group and half assigned to the FTF group. The variable of interest, relational intimacy score, was measured (on a 7-point scale) for each participant after each of three different meeting sessions. Summary statistics for the first meeting session are given here. The researchers hypothesized that, after the first meeting, the mean relational intimacy score for participants in the CMC group would be lower than the mean relational intimacy score for participants in the FTF group. Test the researchers’ hypothesis using α = .10. CMC FTF Number…A study prospectively examined whether sleep-disordered breathing was associated with an increased risk of death from any cause in a cohort of 600 adults participating in the Sleep Heart Health Study. Study participants were classified into four groups depending on the extent of their sleep-disordered breathing (none, mild, moderate, or severe). The counts of deaths over the course of the study are reported for each group in the following two-way table. Mild Severe 100 Death No Death Total None 40 100 140 40 100 140 Moderate 20 100 120 Total 200 400 600 100 200 We want to know whether the study findings give evidence of a significant difference of the number of deaths between the different groups. Set up the alternative hypothesis (H, : The distribution of the categorical variable is not as given by the null hypothesis (lack of fit) At least ones of the means is different from the others O The two categorical variables are dependent The distribution of the categorical variable is not…
- Students at a major university in Southern California are complaining about a serious housing crunch. Many of the university's students, they complain, have to commute too far to school because there is not enough housing near campus. The university officials' response is to perform a study. The study, reported in the school newspaper, contains the following histogram summarizing the commute distances for a sample of 100 students at the university: Frequency 30- 25- 20+ 15- 10 5 0. 0 23 4 27 18 14 12 8 12 16 Commute distance (in miles) 20 6 24 Based on this histogram, draw the ogive (the cumulative relative frequency polygon) for the data in the study.A study prospectively examined whether sleep-disordered breathing was associated with an increased risk of death from any cause in a cohort of 600 adults participating in the Sleep Heart Health Study. Study participants were classified into four groups depending on the extent of their sleep-disordered breathing (none, mild, moderate, or severe). The counts of deaths over the course of the study are reported for each group in the following two-way table. Death No Death Total None 40 100 140 Mild 40 100 140 Moderate 20 100 120 Severe 100 100 200 Total 200 400 600 We want to know whether the study findings give evidence of a significant difference of the number of deaths between the different groups. The observed test statistic is 3.610 42.857 5.476 8.075e blackboard.njcu.edu Bb NJCU BIlackboard Ultra Content Launch Meeting - Zoom * Question Completion Status: QUESTION 1 The following dataset consists of the number of siblings reported by 4 people: х: ( 2, 3, 0, 1} Perform the following operations: O a. 8 O b.6 Ос. 14 O d. 36 QUESTION 2 scale: The ethnicity group of the subjects in the experiment is an example of