2.19,2.21,2.22: Systolic and diastolic blood pressure (BP, in mm Hg) was measured
in a sample of n=32 persons under both recumbent and standing positions. The
average systolic BP was 8.8125 +- 7.735288 mm Hg higher in the recumbent
position than in the st

4.9
STATA command: display binomialtail(15,6,.2)
The probability of obtaining at least 6 cases of influenza in the class if the
nationwide rate that 20% of students developing influenza holds true, is 0.06105 or
about 6.1%.
4.10
E(x) = np
=15*(.2)
=3
Give

6.11
STATA command: ci mean dur_stay
A random sample of n=25 records showed that the mean duration of hospital stay is
estimated to be 8.6 days with a 95% confidence interval of 6.24-10.96 days.
6.12
STATA command: ci mean wbc
A random sample of n=25 reco

3.20
() = 0.049
() =0.023
() =0.078
P ( A B C ) = 0.1433 (from question 3.19)
*A=77 year old man has Alzheimers, B=76 year old woman has Alzheimers, C=82 year
old woman has Alzheimers
= P (Women | given one person has disease)
A
B
C
Probability
Disease
No