7) In a study among elderly patients with diabetes, the aim was to study if the intake of metformin wasassociated with lower level of vitamin B12. The alternative hypothesis is:A. Vitamin B12 status is not associated with metformin intakeB. Vitamin B12 status is not different between elderly diabetic patients' group who takes metformin incomparison to the group who does not take metforminC. A+B are correctD. Metformin intake in elderly patients with diabetes reduces vitamin B12 status28) A group of infants with rickets were selected to participate in a study based on diagnosis, ethnicity and ageand then they were matched with healthy infants based on age, weight and higher. The goal of the studywas to compare vitamin D status between the two groups. This is:A. A cross sectional studyC. Retrospective studyD. Noe is applicableB. Case control study29) The level of education (Baccalaureate, Master, & PhD) is considered:A. Scale variableC. Ordinal variableB. Metric variableD. None of the choices30) Researchers intended to take urine samples from university students to assess if iodine level can affectuniversity achievement in terms of GPA (Total grades).A. In this case specifically, researchers should obtain the names of the study participants and disclose themto authorityB. Since it is about urine samples, informed consent is not requiredC. B+A are correctD. Informed consent should be obtained and biological samples should be confidential31) Two researchers from An-Najah National University decided to conduct a study on diabetic patients inPalestine in order to determine the prevalence of the disease in 2022 in the West Bank particularly. The beststudy design to use isA. Prospective cohort studyC. Case-control studyB. Cross-sectional studyD. Retrospective cohort study2: Fill the following statements with the suitable answer from the tableNo.1456789102Method Type IIAnswer3Retrospective clustercohort studya simple Sampling dependentType 1 independent arandombiasfocusgroup1. Providing more information about the research setting, data collection tools, and the context of the study is a ---section of research.2.is a research technique used to collect data through group interaction3.-occurs when a research study design fails to collect a representative sample of a target population----variable is a variable whose value will change depending on the value of another variable4.5. A study design that is suitable for diseases with long latency period6.error is when the test result says you have coronavirus, but you actually don't.- error7. The mistaken acceptance of an actually false null hypothesis is8. Successive random sampling of units from larger to smaller units (e.g., states, then zip codes, then households)----samplingis an example ofsampling9. The sampling method that involves random selection of elements from the sampling frame is

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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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