UNDERSTANDING BASIC STAT LL BUND >A< F
7th Edition
ISBN: 9781337372763
Author: BRASE
Publisher: Cengage Learning
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Chapter 8.1, Problem 17P
Diagnostic Tests: Plasma Volume Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. (Reference: See Problem 16.) Suppose that a random sample of 45 male firefighters are tested and that they have a plasma volume sample
(a) Find a 99% confidence interval for the population mean blood plasma volume in male firefighters. What is the margin of error?
(b) What conditions are necessary for your calculations?
(c)Interpret your results in the context of this problem.
(d)
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Part D
A sociologist wants to determine if the life expectancy of people in Africa is less than
the life expectancy of people in Asia. The data obtained is shown in the table below.
Africa
Asia
= 63.3 yr.
1
X,=65.2 yr.
2
o, = 9.1 yr.
= 7.3 yr.
n1
= 120
= 150
Total plasma volume is important in determining the required plasma component in blood replacement therapy for a person undergoing surgery. Plasma volume is influenced by the overall health and physical activity of an individual. Suppose that a random
sample of 44 male firefighters are tested and that they have a plasma volume sample mean of x = 37.5 ml/kg (milliliters plasma per
kilogram body weight). Assume that o = 8.00 ml/kg for the distribution of blood plasma.
Chapter 8 Solutions
UNDERSTANDING BASIC STAT LL BUND >A< F
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