Recall the data from the Physicians’ Health Study: Of the 11,034 physicians who took the placebo,...

Recall the data from the Physicians’ Health Study: Of the 11,034 physicians who took the placebo, 138 devel- oped ulcers during the study. Of the 11,037 physicians who took aspirin, 169 developed ulcers.

a. Use an appropriate applet to find and report the theory-based 95% confidence interval.

b. Does the 95% confidence interval contain 0? Were you expecting this? Explain your reasoning.

c. Interpret the 95% confidence interval in the context of the study.

d. Use the 95% confidence interval to state a conclusion about the strength of evidence in the context of the study.

e. Relatively speaking, is the 95% confidence interval narrow or wide? Explain why that makes sense.

Expert Solution

orchestra answered 3 years ago

In a study of memory recall, ten students from a large statistics and data analysis class...

In a study of memory recall, ten students from a large statistics and data analysis class were selected at random and given 15 minutes to memorize a list of 20 nonsense words. Each was asked to list as many of the words as he or she could remember both 1 hour and 24 hours later. The data are as shown in Table 1. Is there evidence to suggest the mean number of words recalled after 1 hour exceeds the mean...

Recall that you took samples of words from the population of words in the Gettysburg Address,...

Recall that you took samples of words from the population of words in the Gettysburg Address, for which the average length of a word is 4.295 letters. 1.Is the number 4.295 a parameter or a statistic? 2.When you first selected your sample of 10 (circled) words, what was the variable that you recorded about the words? Was the variable categorical or quantitative? 3.You calculated the average (mean) number of letters per word in your sample of ten circled words. Is...

Case Study: To recall or not to recall? That is the question You are part of...

Case Study: To recall or not to recall? That is the question You are part of the executive team of Nature Only, LLC, a small business that manufactures wholesome organic snacks, such as granola bars, trail mix, and popcorn. One of your suppliers sent an email to your CEO stating that the last stock of oats sent to Nature Only may have been contaminated with Listeria, which can either be completely harmless or cause serious and sometimes fatal infections in...

For questions 16-19, use the following information. The Physicians’ Health Study began in 1982 to test...

For questions 16-19, use the following information. The Physicians’ Health Study began in 1982 to test whether low-dose aspirin was beneficial in reducing myocardial infarctions (i.e., heart attacks). The study population consisted of 22,000 male physicians who were randomly assigned to either a low-dose aspirin or a placebo group. These physicians were followed for five years. In the sample, 50% received low-dose aspirin, 1.7% had myocardial infarctions, and 97.8% of the physicians in the placebo group did not have a...

Case study: A health system owns and operates a hospital and employs primary care physicians, general...

Case study: A health system owns and operates a hospital and employs primary care physicians, general surgeons, and oncologists. The hospital purchased a surgical practice in 2012. Part of the purchase of the practice included the purchase of the electronic medical record system that was a certified EHR. In January 2014, the hospital transitioned the primary care physicians, surgeons, and the radiologists in the hospital to a new certified electronic health record, the implementation of which was completed 10 months...

1. Studies show that patients who are more active in interacting with physicians enjoy better health...

1. Studies show that patients who are more active in interacting with physicians enjoy better health outcomes. True or False 2. Briefly describe the different types of tests that are available to screen for HIV infection, and the tests for determining the status of an infection in HIV-positive people. Who should be tested for HIV infection? 3. An adult would be diagnosed with hypertension beginning at what level of blood pressure or above? 160/100 • 100/70 • 130/80 • 120/75...

The following data are from a random sample of 10 students who participated in a study...

The following data are from a random sample of 10 students who participated in a study undertaken to investigate the effect of sleep time (measured in average number of hours of sleep per night) on GPA (grade point average, measured on a 4-point scale). Student Sleep time GPA 1 7 3.28 2 9 3.16 3 8 3.75 4 6 2.50 5 4 2.45 6 8 2.91 7 7 3.53 8 6 3.02 9 3 2.30 10 8 3.48 a. Find...

A group of physicians from Denmark conducted a year-long study of the effectiveness of nicotine chewing...

A group of physicians from Denmark conducted a year-long study of the effectiveness of nicotine chewing gum in helping people stop smoking. The 113 people who participated in the study were all smokers. Of these, 60 were given a chewing gum with 2 mg of nicotine, and 53 were given a placebo chewing gum with no nicotine. This was a randomized controlled study. All were told to use the gum and refrain from smoking. Results showed that 23 of the...

The following data were recorded as part of a study on sustainable farming techniques that took...

The following data were recorded as part of a study on sustainable farming techniques that took place in Boone County, IA. (Davis, Adam S. et al. Increasing Cropping System Diversity Balances Productivity, Profitability and Environmental Health. PLOS ONE. October 10, 2012. DOI:10.1371/journal.pone.0047149) Means are for the April-November growing seasons. (1): Construct a two-way scatter plot for “air temperature” against the “total precipitation” and on a separate graph construct a two-way scatter plot for “air temperature” against “log of total precipitation”....

Electronic Health Record (EHR) Physicians have been moving from paper medical records to Electronic Health Records...

Electronic Health Record (EHR) Physicians have been moving from paper medical records to Electronic Health Records (EHR). Discuss the Electronic Health Records, benefits, and challenges and relate it to a medical coding specialist/medial coder’s day to day activities.

Question