In January 2022, Gallup conducted a survey with 3,035 US adults to learn more about Americans' sleep issues. Here are some of the key findings, as reported by Gallup: Key Findings 1 One in three American adults (33%) - representing about 84 million people - describe their sleep as "fair" or "poor." Thirty-five percent report their sleep was "good" while the remaining 32% describe their sleep as "very good" or "excellent." 2 Mental health is a critical component of good sleep. Those who rate their general mental health as "excellent" or "very good" are six times more likely to get high-quality sleep than are those who rate their mental health "fair" or "poor" (50% vs. 8%, respectively). These key findings describe the results from two variables. What type of variable are they? Both are quantitative. One is quantitative and one is categorical. Both are categorical. What percent of respondents described their sleep as good, very good, or excellent? Enter your answer as a percent using the % sign (for ex., type 11% for the value eleven percent). Enter your answer here The study found that respondents with better general mental health were substantially more likely than those with poorer general mental health to get high-quality sleep. Can we conclude that poorer mental health causes poor sleep quality in this sample of American adults? Explain your statistical reasoning in one sentence. Enter your answer here

In a study about learning styles, researchers used a group of 64 elementary school students who volunteered to be part of the study. The researchers gave each student a pre-test and based upon the results, they divided them into 32 pairs of similarly scoring students. School administrators then randomly assigned one student from each pair to mathematics instruction online while the other student received in-person instruction in a traditional classroom. At the end of the year, all 64 students received a mathematics assessment, measured on a 100-point scale.   The researchers calculated the difference (in person −− online) in the mathematics assessment scores for each pair of students. The 32 differences had a mean of 15 and a standard deviation of 3.9 points.   Construct and interpret a 95% confidence interval for the mean difference (in person −− online) in the mathematics assessment scores for all pairs of students like these who learn math either face-to-face or online.

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.