Homework Answers
From the given information above,
The Pvalue is less than 0.01 , we reject the null hypothesis at 1% level
We can conclude that there is sufficient evidence to support the claim that there is difference between the mean concentration of plasma antioxidant vitamins between patients with stomach cancer and control.
There is a significant difference between these two variables.
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i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii)What...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii)What...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii)What would be Type I and Type II errors 5. A study is performed to examine the relationship between the concentration of plasma antioxidant vitamins and cancer risk. The table below shows data for plasma vitamin- A concentration in stomach-cancer patients and in controls (participants similar to the cancer patients but free of disease). Is there a significant difference in the mean concentration of plasma...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii)...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii) What would be Type I and Type II errors. 4. The mean lifetime for cardiac stents is 8.9 years. A medical device company has implemented some improvements in the manufacturing process and hypothesizes that the lifetime is now longer. A study of 40 new devices reveals a mean lifetime of 9.7 years with a standard deviation of 3.4 years. Is there statistical evidence of...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii)...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii) What would be Type I and Type II errors. 3. A study is conducted to compare mean cholesterol levels for individuals following a low carbohydrate diet for at least 6 months to individuals following a conventional (low-fat, low calorie) diet for at least 6 months. The data are summarized below: Diet Program Low Carbohydrate Conventional Sample Size Mean Cholesterol Std Dev Cholesterol 50 225.4...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii)...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii) What would be Type I and Type II errors. 1. An investigator hypothesizes that cholesterol levels in children might be affected by educating their parents on proper nutrition and exercise. A sample of 40 families with a child between the ages of 10-15 who has been diagnosed with high cholesterol agree to participate in the study. All parents are provided educational information on nutrition...
photos for each question are all in a row (1 point) In the following questions, use...
photos for each question are all in a row
(1 point) In the following questions, use the normal distribution to find a confidence interval for a difference in proportions pu - P2 given the relevant sample results. Give the best point estimate for p. - P2, the margin of error, and the confidence interval. Assume the results come from random samples. Give your answers to 4 decimal places. 300. Use 1. A 80% interval for pı - P2 given that...
All of the following questions are in relation to the following journal article which is available...
All of the following questions are in relation to the following journal article which is available on Moodle: Parr CL, Magnus MC, Karlstad O, Holvik K, Lund-Blix NA, Jaugen M, et al. Vitamin A and D intake in pregnancy, infant supplementation and asthma development: the Norwegian Mother and Child Cohort. Am J Clin Nutr 2018:107:789-798 QUESTIONS: 1. State one hypothesis the author's proposed in the manuscript. 2. There is previous research that shows that adequate Vitamin A intake is required...
explaim the mechanisms amd toxological effects if type 1 diabetes in this article Exposure to arsenic...
explaim the mechanisms amd toxological effects if type 1
diabetes in this article
Exposure to arsenic in drinking water is associated with increased prevalence of diabetes. We previously reported an association of diabetes and urinary concentration of dimethylarsinite (DMAS"), a toxic product of arsenic methylation by arsenic (+ 3 oxidation state) methyltransferase (AS3MT). Here we examine associations between AS3MT polymorphism, arsenic metabolism and diabetes. Fasting blood glucose, oral glucose tolerance and self-reported diagnoses were used to identify diabetic individuals. Inorganic...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii)What would be Type I and Type II errors 5. A study is performed to examine the relationship between the concentration of plasma antioxidant vitamins and cancer risk. The table below shows data for plasma vitamin- A concentration in stomach-cancer patients and in controls (participants similar to the cancer patients but free of disease). Is there a significant difference in the mean concentration of plasma...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii) What would be Type I and Type II errors. 4. The mean lifetime for cardiac stents is 8.9 years. A medical device company has implemented some improvements in the manufacturing process and hypothesizes that the lifetime is now longer. A study of 40 new devices reveals a mean lifetime of 9.7 years with a standard deviation of 3.4 years. Is there statistical evidence of...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii) What would be Type I and Type II errors. 3. A study is conducted to compare mean cholesterol levels for individuals following a low carbohydrate diet for at least 6 months to individuals following a conventional (low-fat, low calorie) diet for at least 6 months. The data are summarized below: Diet Program Low Carbohydrate Conventional Sample Size Mean Cholesterol Std Dev Cholesterol 50 225.4...
i) State the Hypotheses to Test. ii) Make a decision based on the information given. iii) What would be Type I and Type II errors. 1. An investigator hypothesizes that cholesterol levels in children might be affected by educating their parents on proper nutrition and exercise. A sample of 40 families with a child between the ages of 10-15 who has been diagnosed with high cholesterol agree to participate in the study. All parents are provided educational information on nutrition...
photos for each question are all in a row
(1 point) In the following questions, use the normal distribution to find a confidence interval for a difference in proportions pu - P2 given the relevant sample results. Give the best point estimate for p. - P2, the margin of error, and the confidence interval. Assume the results come from random samples. Give your answers to 4 decimal places. 300. Use 1. A 80% interval for pı - P2 given that...
All of the following questions are in relation to the following journal article which is available on Moodle: Parr CL, Magnus MC, Karlstad O, Holvik K, Lund-Blix NA, Jaugen M, et al. Vitamin A and D intake in pregnancy, infant supplementation and asthma development: the Norwegian Mother and Child Cohort. Am J Clin Nutr 2018:107:789-798 QUESTIONS: 1. State one hypothesis the author's proposed in the manuscript. 2. There is previous research that shows that adequate Vitamin A intake is required...
explaim the mechanisms amd toxological effects if type 1
diabetes in this article
Exposure to arsenic in drinking water is associated with increased prevalence of diabetes. We previously reported an association of diabetes and urinary concentration of dimethylarsinite (DMAS"), a toxic product of arsenic methylation by arsenic (+ 3 oxidation state) methyltransferase (AS3MT). Here we examine associations between AS3MT polymorphism, arsenic metabolism and diabetes. Fasting blood glucose, oral glucose tolerance and self-reported diagnoses were used to identify diabetic individuals. Inorganic...
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