1. Approximately 30% of obese patients develop
diabetes (p=0.3). If a physician sees 10 patients (n=10) who are
obese, what is the probability that half of them will develop
diabetes (Pr X=5)? [Hint: use the binomial equation]
A. 0.10
B. None are correct
C. 249.8
D. 3.34 * 10-6
E. 0.01
2. Obesity is a growing problem in the U.S. and
educators are looking to determine the probability of children in
their schools becoming obese before they leave elementary school.
Suppose you have a population of children entering elementary
school in Evansville. The probability of a male child becoming
obese before leaving elementary school is 0.4 and the probability
of a female child becoming obese before leaving elementary school
is 0.35. If you select one male and one female from the population
of incoming elementary students, the probability that both the male
and the female would become obese before leaving elementary school
is 0.14. What is the probability that the male or the female (or
both) will become obese before they leave elementary school?
A. Pr (male | female)=0.4
B. Pr (male ∩ female)=0.14
C. It is not possible to calculate
with the given information
D. Pr (male ∪ female)=0.61
3. The normal distribution can be described by all
of the following, except:
A. The area under the curve equals
1.0
B. The curve is symmetric around the
mean
C. It has a bell shape
D. The values in the middle are more
likely to occur
E. Pr (μ-2σ < X < μ+2σ) =
0.99
4. In a study of esophageal cancer and chewing
tobacco, 1000 subjects with cancer and 1000 healthy controls were
enrolled. Each subject was asked about their previous use of
chewing tobacco. Three hundred and fifty of the cases and 120 of
the control had exposure to chewing tobacco. This study design is
best described as a:
A. Intervention trial
B. Cross sectional study
C. Case control study
D. Case series
E. Cohort study
1. Approximately 30% of obese patients develop diabetes (p=0.3). If a physician sees 10 patients (n=10)...