Fundamentals of Biostatistics
8th Edition
ISBN: 9781305268920
Author: Bernard Rosner
Publisher: Cengage Learning
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Chapter 2, Problem 10P
A man runs 1 mile approximately once per weekend. He records his time over an 18-week period. The individual times and summary statistics are given in Table 2.14.
Table 2.14 One mile running time for an individual, over 18 weeks
Suppose we construct a new variable called time_100 = 100 × time (e.g., for week 1, time_100 = 1280).
What is the mean and standard deviation of time_100?
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King Tut was an ancient Egyptian ruler whose tomb was discovered and opened in
1923
. Legend has it that the archaeologists who opened the tomb were subject to a "mummy's curse," which would shorten their life spans. A team of scientists conducted an investigation of the mummy's curse. They reported that the
24
people exposed to the curse had a mean life span of
71.1
years with a standard deviation of
11.6
years, while a sample of
12
Westerners in Egypt at the time who were not exposed to the curse had a mean life span of
77.7
years with a standard deviation of
13.9
years. Assume that the populations are approximately normal. Can you conclude that the mean life span of those exposed to the mummy's curse differs from the mean life span of those not exposed? Let
μ1
denote the mean life span of those exposed to the mummy's curse and
μ2
denote the mean life span of those not exposed. Use the
=α0.01
level and the
P
-value method with the TI-84 Plus calculator.
do we…
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Determine the test statistic for the hypothesis test. Round the solution to four decimal places.Determine the p-value (range) for the hypothesis test.
p-value < 0.001
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Chapter 2 Solutions
Fundamentals of Biostatistics
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