Question

In: Statistics and Probability

(03.02, 03.04 HC) A preliminary study conducted at a medical center in Houston has shown that...

(03.02, 03.04 HC) A preliminary study conducted at a medical center in Houston has shown that treatment with chamomile oil reduces the self-reported level of pain in patients with Lyme disease. During each session, a patient rested on an examining table in the doctor's office while the oil was inserted in the body at the site of pain. Sessions continued for several weeks, after which pain reduction was measured. A new study is being designed to investigate whether chamomile oil also reduces pain in patients suffering from pinched nerves in the cervical region of the spine. Four hundred female patients are available for the new study.

Part A: Describe an appropriate design for the new study. Your discussion should address briefly the treatments used, methods of treatment assignment, and the variables to be measured. Do not describe how the data are analyzed. (4 points)

Part B: Would you modify the study design if, instead of 400 female patients, there were 200 male and 200 female patients available for the study? If so, how would you modify your design? If not, why not? (4 points)

Part C: Could your design be double-blind? Explain. (2 points) (10 points)

Solutions

Expert Solution

orchestra answered 2 years ago
Next > < Previous

Related Solutions

A recent 10-year study conducted by a research team at the Medical School was conducted to...
A recent 10-year study conducted by a research team at the Medical School was conducted to assess how age, blood pressure, and smoking relate to the risk of strokes. Assume that the following data are from a portion of this study. Risk is interpreted as the probability (times 100) that the patient will have a stroke over the next 10-year period. For the smoking variable, define a dummy variable with 1 indicating a smoker and 0 indicating a nonsmoker. Risk...
A recent 10-year study conducted by a research team at the Medical School was conducted to...
A recent 10-year study conducted by a research team at the Medical School was conducted to assess how age, blood pressure, and smoking relate to the risk of strokes. Assume that the following data are from a portion of this study. Risk is interpreted as the probability (times 100) that the patient will have a stroke over the next 10-year period. For the smoking variable, define a dummy variable with 1 indicating a smoker and 0 indicating a nonsmoker. Risk...
A study conducted by the Center for Population Economics at the University of Chicago studied the...
A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 618 babies born in New York. The mean weight was 3404 grams with a standard deviation of 859 grams. Assume that birth weight data are approximately bell-shaped. A. Estimate the number of newborns whose weight was less than 4263 grams. Approximately ____ of the 618 newborns weighed less than 4263 gram B. Estimate the number of newborns whose weight was greater...
A medical study has shown that the first 20 days of radiation therapy, a particular type...
A medical study has shown that the first 20 days of radiation therapy, a particular type of malignant tumor decreases at a rate according to the function M'(t)=−0.015t^2+0.01t where MM represents the mass (in grams) of the tumor and tt is the time (in days) since the beginning of the radiation treatment. If a tumor of this particular type has a mass of 150 grams just prior to the start of radiation treatment, a. Rounded to the nearest tenth, at...
A recent study conducted by a health statistics center found that 24​% of households in a...
A recent study conducted by a health statistics center found that 24​% of households in a certain country had no landline service. This raises concerns about the accuracy of certain​ surveys, as they depend on​ random-digit dialing to households via landlines. Pick three households from this country at random. Complete parts​ a) through​ c) below. What is the probability that all three, of them have a​ landline? What is the probability that at least one of them does not have...
A recent study conducted by a health statistics center found that 27​% of households in a...
A recent study conducted by a health statistics center found that 27​% of households in a certain country had no landline service. This raises concerns about the accuracy of certain​ surveys, as they depend on​ random-digit dialing to households via landlines. Pick five households from this country at random. a) What is the probability that all five of them have a​ landline? b) What is the probability that at least one of them does not have a​ landline? c) What...
The Center for Internet & Society at Harvard recently conducted a study analyzing the privacy management...
The Center for Internet & Society at Harvard recently conducted a study analyzing the privacy management habits of teen internet users. In a group of 50 teens, 13 reported having more than 500 friends on Face-book. Use the “plus four” method to find a 90% confidence interval for the true proportion of teens who would report having more than 500 Face-book friends. What is the size of the sample n: What is the number of students reported having friends x...
Case study St. Luke's Medical Center set out to implement a digital medical record, planning to...
Case study St. Luke's Medical Center set out to implement a digital medical record, planning to do so in three phases. Phase 1 would involve establishing a clinical data repository, a central database from which all ancillary clinical systems would feed. Phase 2 would consist of the implementation of CPOE and nursing documentation systems, and Phase 3 would see the elimination of all outside paper reports through the implementation of a document imaging system. St. Luke's staff felt that if...
Problems 12 through 14 refer to the following research study: Researchers conducted a medical study to...
Problems 12 through 14 refer to the following research study: Researchers conducted a medical study to find out if treating a sinus infection with an antibiotic reduced the length of the sinus infection. The study included 241 patients who were diagnosed with a sinus infection. There were 113 patients randomly assigned to receive the antibiotic. The remaining patients received sugar pills. The patients were contacted regularly to find out when each patient stopped having sinus infection symptoms. The results of...
A study conducted by the PEW Research Center reported that 62% of cell phone owners used...
A study conducted by the PEW Research Center reported that 62% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A random sample of 13 cell phone owners is studied to understand how cell phones are used to make purchasing decisions. Write all answers as a decimal rounded to the fourth. a) Interpret the mean using the word expect. b) Find the standard deviation c) Find the probability of exactly 7 using their phones...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT