The half-life of the active substance in a particular drug was measured in 15 subjects. The mean half-life in these subjects was 4.55 hours and the standard deviation was 1.23 hours. The half-life of the active substance can be expected to follow a normal distribution. Questions 12-14 relate to this experiment. Question 12 What is the upper limit of 95% confidence interval for the average half-life? 1. 3.87. 2. 3.93. 3. 5.17. 4. 5.23.

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The half-life of the active substance in a particular drug was measured in 15 subjects. The
mean half-life in these subjects was 4.55 hours and the standard deviation was 1.23 hours.
The half-life of the active substance can be expected to follow a normal distribution.
Questions 12-14 relate to this experiment.
Question 12 What is the upper limit of 95% confidence interval for the average half-life?
1. 3.87.
2. 3.93.
3. 5.17.
4. 5.23.
Question 13
What is the 95% confidence interval for the half-life variance?
1. 0.66.
2. 0.81.
3. 3.06.
4. 3.76.
Question 14
Which of the following statements is correct about the experiment based on the information
provided?
1. o= 1.23.
2. σ21.23.
3. o2 = 4.55.
4. None of the above statements are true.
Transcribed Image Text:The half-life of the active substance in a particular drug was measured in 15 subjects. The mean half-life in these subjects was 4.55 hours and the standard deviation was 1.23 hours. The half-life of the active substance can be expected to follow a normal distribution. Questions 12-14 relate to this experiment. Question 12 What is the upper limit of 95% confidence interval for the average half-life? 1. 3.87. 2. 3.93. 3. 5.17. 4. 5.23. Question 13 What is the 95% confidence interval for the half-life variance? 1. 0.66. 2. 0.81. 3. 3.06. 4. 3.76. Question 14 Which of the following statements is correct about the experiment based on the information provided? 1. o= 1.23. 2. σ21.23. 3. o2 = 4.55. 4. None of the above statements are true.
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