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Disease X is one that often results in severe illness, but never is fatal. On March 21, 1990, 30 students developed disease X among all students in an introductory epidemiology course at a university. (Assume all epidemiology students were exposed to the index case, the instructor.) Through antibody titers we were able to determine the following:
a. of exposed students not infected = 40 b. of exposed students with subclinical infection = 10 c. of exposed students with mild symptoms = 10 d. of exposed students with moderate symptoms = 10 e. of exposed students with severe symptoms = 10
Using your knowledge of infectious disease epidemiology, quantify the pattern of disease X in this group, i.e., what are the infectivity, pathogenicity, and virulence of disease X?
Determine the probability that gas tank's capacity is above 15.25 gallons?
Calculate the suitable mean response time from both proposed locations and find out which proposed site must be selected for the new emergency facility.
Suppose Abraham Lincoln had answered a survey questionnaire in which he indicated that he had not received a grade school diploma. The researcher found that Lincoln's educational score did not correlate with the expected variables. What was wrong?
Research question: Are mean crash damages same for these 3 vehicles? Crash1 Crash Damage ($).
Which of the following measures only the strength of a relationship?
Fit a multiple linear regression model for predicting the hospital duration using age, sex, body temperature, white blood cell counts, antibiotic use, blood culture and service
Do the data provide significant support for any preferences among the three brands? Test At the .05 level of significance.
Determine the probability that we would reject null hypothesis given that it is true?
In the biology class the mean score was 79 with standard deviation 5.
If we want to increase our confidence level from 95% to 99%, what happens to our confidence interval?
What is the probability of selecting an accounting major, given that the person selected is a male?
The American Automobile Association checks the prices of gasoline before many holiday weekends.
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