A dietitian wishes to see if a person’s cholesterol level will change if the diet is supplemented by a certain mineral. Five randomly selected subjects were pre-tested, and then they took the mineral supplement for a 6-week period. The Cholesterol level before and after taking the mineral supplements is shown in the table below. (Cholesterol level is measured in milligrams per deciliter). Table is attached Questions: If X1 is a normal variate with mean 2 and standard deviation 4 and X2 is a normal variate with mean 3 and standard deviation 9, then find E[X1 - 2X2] and Var(X1 - 2X2) The confidence level can be viewed as the amount of risk that an analyst will accept when making a decision (State True or False) You find a 90% confidence interval for true average thiamin content in oats for a given sample as (2.4,7.8) and you interpret the confidence interval as: I can be highly confident that 90% of the oats in the sample will have thiamin content between 2.4 and 7.8 (State True or False)
A dietitian wishes to see if a person’s cholesterol level will change if the diet is supplemented by a certain mineral. Five randomly selected subjects were pre-tested, and then they took the mineral supplement for a 6-week period. The Cholesterol level before and after taking the mineral supplements is shown in the table below. (Cholesterol level is measured in milligrams per deciliter).
Table is attached
Questions:
If X1 is a normal variate with mean 2 and standard deviation 4 and X2 is a normal variate with mean 3 and standard deviation 9, then find E[X1 - 2X2] and Var(X1 - 2X2)
The confidence level can be viewed as the amount of risk that an analyst will accept when making a decision (State True or False)
You find a 90% confidence interval for true average thiamin content in oats for a given sample as (2.4,7.8) and you interpret the confidence interval as: I can be highly confident that 90% of the oats in the sample will have thiamin content between 2.4 and 7.8 (State True or False)
![Subject:
Before:
After:
Calculate the standard deviation of the mean of the differences, you would find in
hypothesis testing for Paired I test. (Do not test hypothesis.)
1
2
3
207
210
190
172
225
250
212
200
188
174](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F409a5571-20c0-410d-908e-964758b8936d%2F33d24672-7719-44e1-813e-b07342b87387%2Fr422c52_processed.png&w=3840&q=75)
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