during a six-year period between 1952 and 1958, 5659 OB patients at Palo Alto Medical Clinic…

during a six-year period between 1952 and 1958, 5659
OB patients at Palo Alto Medical Clinic were studied. The group was
divided into 2630 smokers and 3029 nonsmokers. The final outcome of
each pregnancy was noted and the percentage of the premature
babies was found
for each group. These results show that maternal smoking is
associated with premature delivery at a statistically significant
level, but does not affect the infant mortality. Identify each of
the following
a) the population
b) the sample
c) the variable
d) the parameter
E) the statistic

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