HS311: Epidemiology and Biostatistics I – 1503A / Unit 8 Assignment
Unit 8
Assignment
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*Unit 3, Topic 11, Exercise 11-12
Family Suppose a couple has four children. Assume that each child is equally likely
a.Based on the simulation results, which is more likely, a A b.Write out the sample space and calculate the exact probabilities Enter the exact answer as a decimal.
c.Reanswer part a. using exact probabilities. A
Warning
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families.
split
split
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*Unit
3, Topic 11, Exercise 11-19
Hospital Births
According to The World Almanac and Book of Facts 1999, approximately 
of all
babies born in Texas are Hispanic. Consider a city in Texas with two hospitals,
and suppose that Hospital A has 
births per
day, while Hospital B has 
births per
day.
Technology is used to simulate the births for 
days at
each of these two hospitals. Their histograms are displayed below.
a.Which hospital has more days on which more than 
of the
babies born are Hispanic?
b.Which hospital has more days on which between 
and 
of the
babies born are Hispanic?
c.Which hospital has more days on which less than of the babies
born are Hispanic?
d.Explain how you could have answered parts a–c without
the benefit of the simulation, based on what you learned in this topic about
randomness and sample size.
The hospital with the sample
size is expected to have data that is more concentrated around its mean. Thus, should
have a greater percentage of Hispanic births between and and a
smaller percentage away from the mean – greater than .
Unit 3, Topic 12, Exercise 12-19
Body Temperatures
The histogram below displays the body temperatures (in degrees
Fahrenheit) of 130 healthy adults (Shoemaker, 1996, BodyTemps).
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