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A large medical center's oncology program reported an increased number of cases of pancreatic cancer during a certain month. The hospital's epidemiologist decided to research the problem. Tumor registry records were searched to identify all cases of pancreatic cancer during a five-year period; cancer patients were matched with patients treated for other diseases during the same five-year period. All subjects in the study were questioned about lifestyle factors including alcohol, tea, and coffee consumption. The resulting data are as follows:
DATACancer Patients Other PatientsMen Women Men WomenLIFESTYLE VARIABLEAlcohol 185 120 270 260Tea Drinking 140 110 230 225Coffee Drinking 190 140 270 240Note: Total number of male cancer patients = 200.Total number of female cancer patients = 150.Total number of male patients (other diseases) = 300.Total number of female patients (other diseases) = 300.
Alcohol Drinking?WomenChoose one:0.211.372.110.620.92
He argues that regression effect says people who do very poorly in their previous job tend to perform well in their next job. Is this what the regression effects? Describe in detail.
Ohio Company provided the following information regarding its only product--ice skates.
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
Assume grades in college accounting class are normally distributed with a mean of 82 and a standard deviation of 7. what is the probability that a randomly selected student from this class will have a grade lower than 65?
If random sample of size n = 16 are selected, can we say anything about the xbar distribution of sample means?
In a bumper test, three types of autos were deliberately crashed into a barrier at 5mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Are mean crash damages the sa..
A research analyst regresses the number of calls for service (Y) on the Fahrenheit temperature at 4:00 in the afternoon (X). The regression equation finds: Y = 62 + 2.4 X with an r 2 of .67
The proportion of drivers who use seat belts depends on things like age, gender, ethnicity, and local law. As part of a broader study, investigators observed a random sample of 117 female hispanic drivers in Boston
Explain the difference between the null and alternative hypothesis. Which one can be proven in a statistical sense?
A researcher uses hypothesis test to estimate H0 µ= 80. Which combination of factors is most probable to result in rejecting null hypothesis?
Graphical method to solveout the linear programming problem. Describe where the following TEO constraints intersect.
Students in a statistics class at a large state university were given the survey in which one question asked was age (in years); one student was a retired person, and her age was an "outlier".
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