Homework Answers
This is an example of case series.
Case series is a multiple findings of a similar diagnosis in group of people.
Case study is one case of individual finding.
Cross sectional study includes study of exposed and unexposed persons.
Clinical trial is to conclude a disease or treatment and this is not an example of clinical trial.
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Question 30 2 pts A report on a group of children suffering from an unusual form...
DQuestion 28 2 pts Greenhouse workers are exposed to unique environmental conditions that include enclosed spaces,...
DQuestion 28 2 pts Greenhouse workers are exposed to unique environmental conditions that include enclosed spaces, high temperature, high humidity and elevated levels of airborne microorganisms. A research study conducted in the month of July found an increased prevalence of respiratory symptoms (cough, wheeze and phlegm) among workers employed in 3 Midwestern greenhouses. This is an example of a: O Case report O Case series O Cross-sectional study O Case-control study O Clinical trial
EPIDEMIOLOGY QUESTION Investigators conducted a study to compare measles-mumps-rubella (MMR) vaccine history among 1,200 children with...
EPIDEMIOLOGY QUESTION Investigators conducted a study to compare measles-mumps-rubella (MMR) vaccine history among 1,200 children with developmental disorder and 4,400 children without such disorders. (They found no association.) This is an example of which type of study? A. Case-control B. Cohort C. Cross-Sectional D. Clinical trial
QUESTION 1 A group of researchers want to test the effectiveness of PrEP, a clinical intervention that is used to...
QUESTION 1 A group of researchers want to test the effectiveness of PrEP, a clinical intervention that is used to reduce the risk of contracting HIV. Participants are randomly either given the pills or are given condoms. Each person meets with the researchers once a year for 5.years to check their HIV status. This is an example of which study design Prospective cohort study O Case-control study O Cross-sectional study O RCT We were unable to transcribe this image
QUESTION 7 Which of the following follows a group of subjects over time? 1. Cross-sectional 2....
QUESTION 7 Which of the following follows a group of subjects over time? 1. Cross-sectional 2. Clinical trial 3. Cohort 4. Case-Control QUESTION 8 Which of the following is a systematic error? 1. Sampling 2. Confounding 3. Randomization 4. Bias QUESTION 9 This looks at individual experiences in the context of social environment/culture: O 1. Qualitative research 2. Quantitative research 3. Clinical trial 4. Ecological study MERIDA QUESTION 10 This kind of question has a predetermined list of possible answers:...
Question 7 1 pts What is the probability from above that 30% or more of the...
Question 7 1 pts What is the probability from above that 30% or more of the of the candies in a randomly selected bag (ie a random sample of 300 candies) are pink? Round to three decimal places. Question 8 O pts Extra Credit: Just before a referendum on a school budget, a local newspaper polls 373 voters to predict whether the budget will pass. Suppose the budget has the support of 53% of the voters. What is the probability...
can you please solve those quations fast! please! thank you ! Question 9 6 pts For...
can you please solve those quations fast! please! thank you
!
Question 9 6 pts For each of the following research questions, determine whether an observational study, an experiment, or neither should be used to answer the question. Note - each term on the right may be used more than once or not at all. Does learner-centered instruction increase student success rates in math? Experiment Observational study Is a student who successfully completes a college-level math class within 14 months...
Question 3 1 pts Two different types of injection-molding machines are used to form plastic parts. A part is considered...
Question 3 1 pts Two different types of injection-molding machines are used to form plastic parts. A part is considered defective if it has excessive shrinkage or is discolored. Two random samples, each of size 300, are selected and 15 defective parts are found in the sample from machine 1 and 8 defective parts are found in the sample from machine 2. What type of hypothesis test should you use to determine if both machines produce the same fraction of...
Question 12 pts The length of time a person takes to decide which shoes to purchase...
Question 12 pts The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.21 minutes and a standard deviation of 1.90. Find the probability that a randomly selected individual will take less than 6 minutes to select a shoe purchase. Is this outcome unusual? Group of answer choices Probability is 0.88, which is usual as it is greater than 5% Probability is 0.12, which is usual as it is not...
Question 41 2 pts A software company is developing a new computer game. The manager wants...
Question 41 2 pts A software company is developing a new computer game. The manager wants to know what effect the frequency at which opponents are released by the computer has on the length of time players survive in the game. A large group of playtesters is available, most of whom already have some experience playing the new game, and each is randomly allocated to play the game with a different opponent release frequency Data was collected for the variables...
The data of a major referral hospital showed that most patients with ischemic heart disease (IHD)...
The data of a major referral hospital showed that most patients with ischemic heart disease (IHD) were black American. Based on this, it was concluded that black Americans are at higher risk of IHD compared to other community groups. How would you describe the conclusion? A. Correct, because risk factors for IHD are more common in black African American. B. Incorrect, because no test of statistical significance has been made C. Incorrect, because prevalence is used instead of incidence D....
DQuestion 28 2 pts Greenhouse workers are exposed to unique environmental conditions that include enclosed spaces, high temperature, high humidity and elevated levels of airborne microorganisms. A research study conducted in the month of July found an increased prevalence of respiratory symptoms (cough, wheeze and phlegm) among workers employed in 3 Midwestern greenhouses. This is an example of a: O Case report O Case series O Cross-sectional study O Case-control study O Clinical trial
QUESTION 1 A group of researchers want to test the effectiveness of PrEP, a clinical intervention that is used to reduce the risk of contracting HIV. Participants are randomly either given the pills or are given condoms. Each person meets with the researchers once a year for 5.years to check their HIV status. This is an example of which study design Prospective cohort study O Case-control study O Cross-sectional study O RCT We were unable to transcribe this image
QUESTION 7 Which of the following follows a group of subjects over time? 1. Cross-sectional 2. Clinical trial 3. Cohort 4. Case-Control QUESTION 8 Which of the following is a systematic error? 1. Sampling 2. Confounding 3. Randomization 4. Bias QUESTION 9 This looks at individual experiences in the context of social environment/culture: O 1. Qualitative research 2. Quantitative research 3. Clinical trial 4. Ecological study MERIDA QUESTION 10 This kind of question has a predetermined list of possible answers:...
Question 7 1 pts What is the probability from above that 30% or more of the of the candies in a randomly selected bag (ie a random sample of 300 candies) are pink? Round to three decimal places. Question 8 O pts Extra Credit: Just before a referendum on a school budget, a local newspaper polls 373 voters to predict whether the budget will pass. Suppose the budget has the support of 53% of the voters. What is the probability...
can you please solve those quations fast! please! thank you
!
Question 9 6 pts For each of the following research questions, determine whether an observational study, an experiment, or neither should be used to answer the question. Note - each term on the right may be used more than once or not at all. Does learner-centered instruction increase student success rates in math? Experiment Observational study Is a student who successfully completes a college-level math class within 14 months...
Question 3 1 pts Two different types of injection-molding machines are used to form plastic parts. A part is considered defective if it has excessive shrinkage or is discolored. Two random samples, each of size 300, are selected and 15 defective parts are found in the sample from machine 1 and 8 defective parts are found in the sample from machine 2. What type of hypothesis test should you use to determine if both machines produce the same fraction of...
Question 41 2 pts A software company is developing a new computer game. The manager wants to know what effect the frequency at which opponents are released by the computer has on the length of time players survive in the game. A large group of playtesters is available, most of whom already have some experience playing the new game, and each is randomly allocated to play the game with a different opponent release frequency Data was collected for the variables...
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