A total of 2,000 participants were randomly selected in a study conducted to examine the prevalence of hypertension among adults aged 45-64 years living in Oregon.
Choices: Simple random sampling, stratified sampling, cluster sampling, multistage sampling, or systematic random sampling
The data has been first divided into age groups and then samples are being taken from one of the age groups. So, this will be a multistage sampling.
A total of 2,000 participants were randomly selected in a study conducted to examine the prevalence...
A total of 10,000 participants with last digit of cell phone number being 5 were selected in a survey about nutrition status. Choices: Simple random sampling, stratified sampling, cluster sampling, multistage sampling, or systematic random sampling
1. A study is conducted among first year undergraduate students in a US College of Nursing. From a list of these students, every 10th student is selected for an interview. Which of the following sampling strategies is being used? a) Simple random sampling b) Systematic sampling c) Stratified random sampling d) Cluster sampling 2. A study is conducted among first year nursing students in a US College of Nursing. Students are first grouped according to the state in which they...
In a particular county, car registration records for families show ownership of vehicles. There are 2,000 vehicles registered among 1,800 families. (Some families have only one vehicle while others have multiple vehicles.) Of these 2,000 vehicles, 1,500 are cars and 500 are light trucks. The following lists are available: The 2,000 families; the 1,800 vehicles; the 1,500 cars; the 500 light trucks. For each question, identify the sampling plan used to select the sample of vehicles. (a) We select the...
4 pts Question 6 Suppose that researchers are interested in comparing average sugar intake among young adults (ages 18-35), middle-aged adults (ages 36-55) and senior citizens (ages 56 and over) in Hillsborough County. To collect data, they consult a Hillsborough County registry and randomly select 1,000 respondents from each age category to receive a mail-in survey. Identify the samplingſtechnique used. O Stratified random sampling O Cluster sampling Systematic sampling Simple random sampling
A total of 150 participants are selected for a study of risk factors for cardiovascular disease. At baseline (study start), 24 are classified as hypertensive. At 1 year, an additional 12 have developed hypertension, and at 2 years another 8 have developed hypertension. What is the prevalence of hypertension at 2 years in the study?
A total of 150 participants are selected for a study of risk factors for cardiovascular disease. At baseline (study start), 24 are classified as hypertensive. At 1 year, an additional 12 have developed hypertension, and at 2 years another 8 have developed hypertension. What is the prevalence of hypertension at 2 years in the study? What is the 2 year cumulative incidence of hypertensions?
(17 points) In a particular county, car registration records for families show ownership of vehicles. There are 2,000 vehicles registered among 1,800 families. (Some families have only one vehicle while others have multiple vehicles. Of these 2,000 vehicles, 1,500 are cars and 500 are light trucks. The following lists are available: The 2,000 families; the 1,800 vehicles; the 1,500 cars; the 500 light trucks. For each question, identify the sampling plan used to select the sample of vehicles. (a) We...
Problem 6. (17 points) in a particular county, car registration records for families show ownership of vehicles. There are 2,000 vehicles registered among 1,800 families. (Some families have only one vehicle while others have multiple vehicles. Of these 2,000 vehicles, 1,500 are cars and 500 are light trucks. The following lists are available: The 2,000 families; the 1,800 vehicles; the 1,500 cars; the 500 light trucks. For each question, identify the sampling plan used to select the sample of vehicles....
A nationwide study on reaction time is conducted on participants in two age groups. The participants in Group X are less than 40 years old. Their reaction times are normally distributed with mean 0.489 seconds and standard deviation of 0.07 seconds. a. A person is selected at random from Group X. Find the probability that their reaction time is greater than 0.65 seconds. The participants in Group Y are 40 years or older. Their reaction times are normally distributed b....
You are considering various sampling plans for an upcoming study. Based on the descriptions below, please tell me whether the sampling plan is: SRS, systematic, stratified, or cluster 1. You assign a number to each person from a list and randomly choose a number for each person you select for the sample. 2. You want every person to have an equal probability of being chosen throughout the entire selection process. 3. There are different groups of people that you want...