A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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5 c. Test a claim that the mean amount of carbon monoxide in the air in U.S. cities is less than
normally distributed.
2.33
parts per million. It was found that the mean amount of carbon monoxide in the air for the random sample of
64
cities is
2.39
parts per million and the standard deviation is
2.12
parts per million. At
α=0.10,
can the claim be supported? Complete parts (a) through (e) below. Assume the population is (a) Identify the claim and state
H0
and
Ha.
What is:
H0 and Ha?
The claim is the
hypothesis.
(b) Use technology to find the critical value(s) and identify the rejection region(s).
The critical value(s) is/are
t0=
(Use a comma to separate answers as needed. Round to two decimal places as needed.)
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