Test a claim that the mean amount of lead in the air in U.S. cities is less than 0.035 microgram per cubic meter. It was found that the mean amount of lead in the air for the random sample of 58 U.S. cities is 0.038 microgram per cubic meter and the standard deviation is 0.071 microgram per cubic meter. At α=0.05, can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed.
Test a claim that the mean amount of lead in the air in U.S. cities is less than 0.035 microgram per cubic meter. It was found that the mean amount of lead in the air for the random sample of 58 U.S. cities is 0.038 microgram per cubic meter and the standard deviation is 0.071 microgram per cubic meter. At α=0.05, can the claim be supported? Complete parts (a) through (e) below. Assume the population is normally distributed.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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Question
Test a claim that the mean amount of lead in the air in U.S. cities is less than
0.035
microgram per cubic meter. It was found that the mean amount of lead in the air for the random sample of
58
U.S. cities is
0.038
microgram per cubic meter and the standard deviation is
0.071
microgram per cubic meter. At
α=0.05,
can the claim be supported? Complete parts (a) through (e) below. Assume the population is
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