A study of pollutants showed that certain industrial emissions should not exceed 2.4 parts per million. You believe a particular company may be exceeding this average. To test this supposition, you randomly take a sample of nine air tests. The sample average is 3.3 parts per million, with a sample standard deviation of 0.4. Does this result provide enough evidence for you to conclude that the company is exceeding the safe limit? Use a = 0.1. Assume emissions are normally distributed. Appendix A Statistical Tables (Round your answer to 2 decimal places, e.g. 15.25.) The value of the test statistic is and we Save for Later Attempts: 0 of 3 used Submit Answer

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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A study of pollutants showed that certain industrial emissions should not exceed 2.4 parts per million. You believe a particular
company may be exceeding this average. To test this supposition, you randomly take a sample of nine air tests. The sample average is
3.3 parts per million, with a sample standard deviation of 0.4. Does this result provide enough evidence for you to conclude that the
company is exceeding the safe limit? Use a = 0.1. Assume emissions are normally distributed.
Appendix A Statistical Tables
(Round your answer to 2 decimal places, e.g. 15.25.)
The value of the test statistic is
and we
Save for Later
Attempts: 0 of 3 used
Submit Answer
Transcribed Image Text:A study of pollutants showed that certain industrial emissions should not exceed 2.4 parts per million. You believe a particular company may be exceeding this average. To test this supposition, you randomly take a sample of nine air tests. The sample average is 3.3 parts per million, with a sample standard deviation of 0.4. Does this result provide enough evidence for you to conclude that the company is exceeding the safe limit? Use a = 0.1. Assume emissions are normally distributed. Appendix A Statistical Tables (Round your answer to 2 decimal places, e.g. 15.25.) The value of the test statistic is and we Save for Later Attempts: 0 of 3 used Submit Answer
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