Drug for Nausea Ondansetron (Zofran) is a drug used by some pregnant women for nausea. There was some concern that it might cause trouble with pregnancies. An observational study was done of women in Denmark (Pasternak et al. 2013). An analysis of 1849 exposed women and 7376 unexposed women showed that 2.1 % of the women exposed to ondansetron and 5.8 % of the unexposed women had miscarriages during weeks 7 to 22 of their pregnancies. a. Was the rate of miscarriages higher with Zofron, as feared? b. Which of the conditions for finding the confidence interval do not hold?
Drug for Nausea Ondansetron (Zofran) is a drug used by some pregnant women for nausea. There was some concern that it might cause trouble with pregnancies. An observational study was done of women in Denmark (Pasternak et al. 2013). An analysis of 1849 exposed women and 7376 unexposed women showed that 2.1 % of the women exposed to ondansetron and 5.8 % of the unexposed women had miscarriages during weeks 7 to 22 of their pregnancies. a. Was the rate of miscarriages higher with Zofron, as feared? b. Which of the conditions for finding the confidence interval do not hold?
Drug for Nausea Ondansetron (Zofran) is a drug used by some pregnant women for nausea. There was some concern that it might cause trouble with pregnancies. An observational study was done of women in Denmark (Pasternak et al. 2013). An analysis of 1849 exposed women and 7376 unexposed women showed that
2.1
%
of the women exposed to ondansetron and
5.8
%
of the unexposed women had miscarriages during weeks 7 to 22 of their pregnancies.
a. Was the rate of miscarriages higher with Zofron, as feared?
b. Which of the conditions for finding the confidence interval do not hold?
In an observational study it was found that people who had received the flu shot this year had better blood pressure readings, on average, than people who did not. Can it be claimed that the flu shot is the cause of the lower overall blood pressure? Why or why not?
An SMR over 100% ( i.e.,171 %) indicates that the "healthy worker effect"
may be an issue in the interpretation of data from this study population.
O True
O False
The Human Resources Department is studying absenteeism with employees. They have noticed an unacceptable level of absenteeism that is believed to be related to the general health of the employees.
Twelve months ago, a fitness program for employees was started at the company. To evaluate the program, a random sample of eight participants were studied before the fitness program began and the
same eight participants were studied twelve months later. The Human Resources Department believes the number of absences should change over the twelve months.
Before
After
Difference
Employee
1. What is dbar?
2. What is tcrit?
3. What is at?
4. What is pvalue?
1
5. What is decision?
6
5
2
6
2
four decimal places
four decimal places
3
four decimal places
7
1
4
At the 5% significance level, answer the following questions using the following information: Ho: mu d = 0 Ha: mud #0
7
3
5
4
3
6
3
6
7
5
3
8
6
7
standard deviation of sample = 2.92
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Hypothesis Testing - Solving Problems With Proportions; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=76VruarGn2Q;License: Standard YouTube License, CC-BY
Hypothesis Testing and Confidence Intervals (FRM Part 1 – Book 2 – Chapter 5); Author: Analystprep;https://www.youtube.com/watch?v=vth3yZIUlGQ;License: Standard YouTube License, CC-BY