One method for assessing the effectiveness of a drug is to note its concentration in blood...
-
One method for assessing the effectiveness of a drug is to note its concentration in blood and/or urine samples at certain periods of time after giving the drug. Suppose we wish to compare two types of aspirin in regard to their concentration in urine specimens taken one hour after taking the drug within two groups of people. Each person would be randomly assigned to receive one of the medications. What is the appropriate statistical test in this context? Only one answer below
One sample Z or t test
Two independent samples t test
Paired Samples t test
Regression
Chi-Squared test
ANOVA
Confidence Interval
Homework Answers
since both the groups are different or independent since subjects are not related
Two independent samples t test
Add Answer to:
One method for assessing the effectiveness of a drug is to note
its concentration in blood...
E. Longitudinal study 12. A researcher is examining the effectiveness of a new drug on serum...
E. Longitudinal study 12. A researcher is examining the effectiveness of a new drug on serum blood glucose in an anmal model of diabetes. He gives 20 rats a single dose every day for 1 week and gives a similarly matched group of 20 rats a daily placebo dose over the same 1-week period. Following the final dose administration, the investigator measures the blood glucose level in the rats, using a value of 120g/dL as a cutoff do define hyperglycemia....
Dr. Carlton conducts a study to determine the effectiveness of a new intervention for those suffering...
Dr. Carlton conducts a study to determine the effectiveness of a new intervention for those suffering from eating disorders. He compares patients' weights before the intervention to the same patients' weights after the intervention. What is the appropriate statistical test? independent-samples t test between-subjects, one-way ANOVA. O Mann-Whitney U test O paired samples t test
Researchers studying how adults respond to the addition of additives to their pain medication design a...
Researchers studying how adults respond to the addition of additives to their pain medication design a study where volunteers take home either a bottle of standard aspirin, or a bottle of "buffered" aspirin (aspirin mixed with an antacid); the medicine type is randomly assigned, and the volunteers do not know which medication type they have. Every time they have a headache, the volunteers take one of their assigned pills, and record - the severity of the headache (low/medium/high: categorical) -...
Question 10 Background: Name That Scenario: Pet Adoption One important aspect in statistics is to understand...
Question 10 Background: Name That Scenario: Pet Adoption One important aspect in statistics is to understand which statistical methods or procedures are appropriate to use to address the research problem or question of interest. For each description of a research question below, select the one corresponding statistical analysis technique most appropriate for addressing that research question. An employee who has just been put in charge of the pet adoption fundraiser thinks that a personal phone cal to recent adopters asking...
q27 A research team is studying a new pain medication for patients suffering from fibromyalgia. Patients...
q27 A research team is studying a new pain medication for patients suffering from fibromyalgia. Patients suffering from chronic pain as a result of fibromyalgia were divided into two categories: Treatment and Placebo. Patients in the treatment group were injected with the new drug while patients in the placebo group were injected with saline solution. Neither the patients, nor the health care practitioners admininstering the study knew who was receiving the actual drug. After two weeks the patients were asked...
7. A study was conducted to investigate the effectiveness of a new drug for treating Stage...
7. A study was conducted to investigate the effectiveness of a new drug for treating Stage 4 AIDS patients. A group of AIDS patients was randomly divided into two groups. One group received the new drug; the other group received a placebo. The difference in mean subsequent survival (those with drugs - those without drugs) was found to be 1.04 years and a 95% confidence interval was found to be 1.04 ± 2.37 years. Based upon this information: Select one...
Select one answer. A health researcher was interested in finding out whether the DASH diet can...
Select one answer. A health researcher was interested in finding out whether the DASH diet can lower a dieter's blood pressure. Researchers compared the blood pressure 10 points before going on the diet with the same subject's blood pressure after 12 weeks on the DASH diet. Which of the following is the most appropriate statistical test to use to test whether the DASH diet lowers blood pressure? A. O Matched pairs t-test B. O Chi-squared test for independence c. Inference...
21.HE.B: Captopril is a drug designed to lower systolic blood pressure. When subjects were treated with this drug, their systolic blood pressure readings (in mm Hg) were measured before and after the...
21.HE.B: Captopril is a drug designed to lower systolic blood pressure. When subjects were treated with this drug, their systolic blood pressure readings (in mm Hg) were measured before and after the drug was taken. The results are in the accompanying table on the next page. (a) Go through “The Drill” for paired t-tests (Use a 0.05 α-level and the corresponding confidence interval.) The Drill: Assumptions and Conditions Paired Data Condition The data must be paired. Only use pairing if...
Researchers collected volunteers for a study of women who had recently given birth, divided into 2...
Researchers collected volunteers for a study of women who had recently given birth, divided into 2 groups: a comparison group (healthy, uneventful pregn group with gestational diabetes (women who developed diabetes during pregnancy). All the women were between 25 and 40 years old. Also measured for each woman was: - Body Mass Index (BMI) pre-pregnancy (continuous numerical) - Smoker (Yes/No: categorical) - Baby's gestational age at birth in weeks (continuous numerical) - Baby's birth weight in grams (continuous numerical) Enter...
) Ul the residuals and achieve a Une &f the above. In a recent study, blood samples were taken on 20 participants before and after one week of drinking about five cups of tea a day. The befor...
) Ul the residuals and achieve a Une &f the above. In a recent study, blood samples were taken on 20 participants before and after one week of drinking about five cups of tea a day. The before and after samples for each participant were exposed to E.coli bacteria, and the production of interferon gamma (a molecule that fights bacteria, viruses and tumors) was recorded for the before and after samples for each participant. The researcher would like to know...
E. Longitudinal study 12. A researcher is examining the effectiveness of a new drug on serum blood glucose in an anmal model of diabetes. He gives 20 rats a single dose every day for 1 week and gives a similarly matched group of 20 rats a daily placebo dose over the same 1-week period. Following the final dose administration, the investigator measures the blood glucose level in the rats, using a value of 120g/dL as a cutoff do define hyperglycemia....
Dr. Carlton conducts a study to determine the effectiveness of a new intervention for those suffering from eating disorders. He compares patients' weights before the intervention to the same patients' weights after the intervention. What is the appropriate statistical test? independent-samples t test between-subjects, one-way ANOVA. O Mann-Whitney U test O paired samples t test
Researchers studying how adults respond to the addition of additives to their pain medication design a study where volunteers take home either a bottle of standard aspirin, or a bottle of "buffered" aspirin (aspirin mixed with an antacid); the medicine type is randomly assigned, and the volunteers do not know which medication type they have. Every time they have a headache, the volunteers take one of their assigned pills, and record - the severity of the headache (low/medium/high: categorical) -...
Question 10 Background: Name That Scenario: Pet Adoption One important aspect in statistics is to understand which statistical methods or procedures are appropriate to use to address the research problem or question of interest. For each description of a research question below, select the one corresponding statistical analysis technique most appropriate for addressing that research question. An employee who has just been put in charge of the pet adoption fundraiser thinks that a personal phone cal to recent adopters asking...
Select one answer. A health researcher was interested in finding out whether the DASH diet can lower a dieter's blood pressure. Researchers compared the blood pressure 10 points before going on the diet with the same subject's blood pressure after 12 weeks on the DASH diet. Which of the following is the most appropriate statistical test to use to test whether the DASH diet lowers blood pressure? A. O Matched pairs t-test B. O Chi-squared test for independence c. Inference...
Researchers collected volunteers for a study of women who had recently given birth, divided into 2 groups: a comparison group (healthy, uneventful pregn group with gestational diabetes (women who developed diabetes during pregnancy). All the women were between 25 and 40 years old. Also measured for each woman was: - Body Mass Index (BMI) pre-pregnancy (continuous numerical) - Smoker (Yes/No: categorical) - Baby's gestational age at birth in weeks (continuous numerical) - Baby's birth weight in grams (continuous numerical) Enter...
) Ul the residuals and achieve a Une &f the above. In a recent study, blood samples were taken on 20 participants before and after one week of drinking about five cups of tea a day. The before and after samples for each participant were exposed to E.coli bacteria, and the production of interferon gamma (a molecule that fights bacteria, viruses and tumors) was recorded for the before and after samples for each participant. The researcher would like to know...
Most questions answered within 3 hours.
-
A 2-kg block sits on a horizontal table. There is a hole in the
table directly...
asked 7 minutes ago -
If the rate law for the reaction A ⟶ Products is rate = k[A]2 ,
calculate...
asked 10 minutes ago -
A
projectile is shot horizontally at 23.4 m/s from the roof of a
building 55 m...
asked 24 minutes ago -
Which of the following ratios would be considered a measurement
of short-term liquidity?
Select one:
a....
asked 26 minutes ago -
Nitrogen dioxide is one of the many oxides of nitrogen (often
collectively called "NOx") that are...
asked 35 minutes ago -
1/ Using ________________ as they are intended is the best
guarantee for consistency and forward compatibility....
asked 45 minutes ago -
Portfolio theory
Given the following information about firm A and the
market:δ
E (Rm)= 12 per...
asked 43 minutes ago -
Albert files his income tax return (showing a total tax of
$23,000) 5½ months after the...
asked 46 minutes ago -
This exercise involves you using imagination and logical
reasoning to occupy the mindset of a visualiser...
asked 56 minutes ago -
What kinds of storage have you seen in use during your own
lifetime?
asked 57 minutes ago -
Practicing Acid Base Calculations
Cameco in Port Hope, Ontario uses hydrofluoric acid to make a
uranium...
asked 1 hour ago -
The gross payoffs (X) from the investment have the following
probability mass function.
x
p(x)
0...
asked 1 hour ago