Presenting and Explaining Data

Does the example represent an observational study or an​ experiment?   Car accident data is obtained from the Ohio database. It is found that more accidents happened at night.

Study 1. Hunger and Psychological Distress A study was done to determine if food insecurity/hunger impacts psychological distress (this is fake data to make it simple, but it is based off of a 2020 study that examined the associations between food insecurity and psychological distress among older people in Ghana). Participants were broken into three groups based on their responses: no food insecurity, moderate food insecurity, and severe food insecurity. Psychological distress was measured on the Kessler Psychological Distress Scale (K10), where scores range from 0 to 50. Enter data and test to determine if there is a significant difference between the 3 groups in psychological distress.   Food insecurity:                      Psychological distress scores (higher = more distress) No food insecurity                  5          6          8          10        5          4          14        9 Moderate food insecurity        16        14        9          7          14        8…

A graphic representation of a hypothesized causal model is known as a(n): Burchard chart. polygon. areas chart. path diagram. scatter plot.

“The rapid growth of video game popularity has generated concern among practitioners, parents, scholars, and politicians,” wrote researchers Hope M. Cummings and Elizabeth A. Vandewater. In their study, Cummings and Vandewater measured the time adolescents spent playing video games as well as time spent doing other activities, such as interacting with family and friends, reading or doing homework, or playing sports. [Source: Cummings, H., & Vandewater, E. (2007). Relation of adolescent video game play to time spent in other activities. Archives of Pediatrics & Adolescent Medicine, 161(7), 684–689.] After reading about the study conducted by Cummings and Vandewater, you decide to conduct a similar study among a sample of 10 teenage girls. You ask the girls to keep a log of their activities for a day. You want to test whether the amount of time girls spend playing video games is correlated with the amount of time they read for pleasure. You realize that because some of the…

“The rapid growth of video game popularity has generated concern among practitioners, parents, scholars, and politicians,” wrote researchers Hope M. Cummings and Elizabeth A. Vandewater. In their study, Cummings and Vandewater measured the time adolescents spent playing video games as well as time spent doing other activities, such as interacting with family and friends, reading or doing homework, or playing sports. [Source: Cummings, H., & Vandewater, E. (2007). Relation of adolescent video game play to time spent in other activities. Archives of Pediatrics & Adolescent Medicine, 161(7), 684–689.] After reading about the study conducted by Cummings and Vandewater, you decide to conduct a similar study among a sample of 10 teenage girls. You ask the girls to keep a log of their activities for a day. You want to test whether the amount of time girls spend playing video games is correlated with the amount of time they read for pleasure. You realize that because some of the…

QUESTION DETAILS: Super Sneaker Company is evaluating two different materials, A and B, to be used to construct the soles of their new active shoe targeted to city high school students in Canada. While material B costs less than material A, the company suspects that mean wear for material B is greater than mean wear for material A. Two study designs were initially developed to test this suspicion. In both designs, Halifax was chosen as a representative city of the targeted market. In Study Design 1, 16 high school students were drawn at random from the Halifax School District database. After obtaining their shoe sizes, the company manufactured 16 pairs of shoes, each pair with one shoe having a sole constructed from material A and the other shoe, a sole constructed from material B A = (16.41 13.32 11.86 14.76 12.52 12.27 13.71 13.59 15. B (14.76 15.09 14.02 13.54 15.35 14.29 13.26 14.65 14. QUESTION TO ANSWER* PLEASE USER SOFTWARE TO ANSWER AND SHOW CODE: What is the 95% confidence…

Which of the following designs is best for testing a causal relationship? Cross-sectional Ecological Case-control Experimental trials Case report/case series

Which type of observational study is described in the problem statement?