What reservations do you have about the design of the study

Assignment Help Basic Statistics

Reference no: EM131421905

Joseph Lister (for whom Listerine is named!) was a British physician who was interested in the role of bacteria in human infections. He suspected that germs were involved in transmitting infection, so he tried using carbolic acid as an operating room disinfectant. In 75 amputations, he used carbolic acid 40 times. Of the 40 amputations using carbolic acid, 34 of the patients lived. Of the 35 amputations without carbolic acid, 19 patients lived. The question of interest is whether carbolic acid is effective in increasing the chances of surviving an amputation.

a) What kind of a study is this?

b) What do you conclude? Support your conclusion by testing an appropriate hypothesis.

c) What reservations do you have about the design of the study?

Reference no: EM131421905

Questions Cloud

Specific heat capacity and percent ethanol in solution : Describe the relationship between specific heat capacity and percent ethanol in solution and why?

Witness for the prosecution : Read Agatha Christie's short story "Witness for the Prosecution" (1925) ani,(1 view its 1957 film adaptation starting Charles Laughton. Write an essay in which you critique the film -avatarepresented Christie's text.

Company sells two products-gasoline and heating oil : Chandler Oil Company has 5000 barrels of oil 1 and 10000 barrels of oil 2. The company sells two products: gasoline and heating oil. Both products are produced by blending oil 1 and oil 2. The quality level of each oil is as follows: 10 for oil 1; 5 ..

Calculate the ph after addition : 1) A 50.0 mL volume of 0.15 M HBr is titrated with 0.25 M KOH. calculate the PH after addition of 15.0mL of KOH? 2) A 75.0 mL volume of 0.200 M NH3(Kb=1.8*10^-5)is titrated with 0.500 M HNO3. Calculate the PH after adding 27.0mL HNO3?

What reservations do you have about the design of the study : What kind of a study is this?- What do you conclude? Support your conclusion by testing an appropriate hypothesis.

Analyze the sublimation of the crude naphthalene : Analyze the extraction of the salicylic acid-naphthalene mixture by using two solvents: saturated aqueous sodium bicarbonate and water? Analyze the sublimation of the crude naphthalene?

Why might the margin of error be so large : Probability theory predicts that the letter A should appear in 63% of the hands. Does this make you concerned that the simulation might be faulty? Explain.

Greater specific heat capacity : Explain how one sample of a metal can have a greater heat capacity than another metal with a greater specific heat capacity.

Analyse the case study and prepare a business report : TITLE - INTEGRATED CASE STUDY ANALYSIS. Students will have to analyse the case study given to them and prepare a business report for 6000 words. Students are required to undertake the tasks given below. Explain the Case study background, the statem..

User Account

All Pages