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6. A clinical trial was conducted to determinc if a certain type of inoculation has an cffect on the incidence of a certain discase. A sample of 500 of the rats were given the inoculation and 500 of them not inoculated. In the group not inoculated, there were 120 incidences of the discase, while 98 of the rats in the inoculated group contracted it. Compute a 99% confidence interval for the difference between the proportions of inoculated and not inoculated groups.

6. A clinical trial was conducted to determinc if a certain type of inoculation has an cffect on the incidence of a certain discase. A sample of 500 of the rats were given the inoculation and 500 of them not inoculated. In the group not inoculated, there were 120 incidences of the discase, while 98 of the rats in the inoculated group contracted it. Compute a 99% confidence interval for the difference between the proportions of inoculated and not inoculated groups.

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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6. A clinical trial was conducted to determine if a certain typc of inoculation has an effect on the incidence of a certain discasc. A sample of 500 of the rats were given the inoculation and 500 of them not inoculated. In the group not inoculated, there were 120 incidences of the discase, while 98 of the rats in the inoculated group contracted it. Compute a 99% confidence interval for the difference betwecen the proportions of inoculated and not inoculated groups. 7 TI
Transcribed Image Text:6. A clinical trial was conducted to determine if a certain typc of inoculation has an effect on the incidence of a certain discasc. A sample of 500 of the rats were given the inoculation and 500 of them not inoculated. In the group not inoculated, there were 120 incidences of the discase, while 98 of the rats in the inoculated group contracted it. Compute a 99% confidence interval for the difference betwecen the proportions of inoculated and not inoculated groups. 7 TI
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