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e. What conditions are required for the test results to be valid? Select all that apply. A. The sample was selected from a population with a distribution that is highly skewed. B. The population standard deviation is known. C. The sample was random. D. The sample was selected from a population with a distribution that is approximately normal. E. No assumptions are required for this test.

e. What conditions are required for the test results to be valid? Select all that apply. A. The sample was selected from a population with a distribution that is highly skewed. B. The population standard deviation is known. C. The sample was random. D. The sample was selected from a population with a distribution that is approximately normal. E. No assumptions are required for this test.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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e. What conditions are required for the test results to be valid? Select all that apply. A. The sample was selected from a population with a distribution that is highly skewed. B. The population standard deviation is known. C. The sample was random. D. The sample was selected from a population with a distribution that is approximately normal. E. No assumptions are required for this test.
Transcribed Image Text:e. What conditions are required for the test results to be valid? Select all that apply. A. The sample was selected from a population with a distribution that is highly skewed. B. The population standard deviation is known. C. The sample was random. D. The sample was selected from a population with a distribution that is approximately normal. E. No assumptions are required for this test.
In a study published in a journal, occupational accidents at three construction sites in a country were monitored. The total numbers of accidents at the three randomly selected sites were 52, 105, and 38. Summary statistics for these three sites are: x = 65 and s= 35.3. Suppose an occupational safety inspector claims that the average number of occupational accidents at all of the country's construction sites is less than 71.
Transcribed Image Text:In a study published in a journal, occupational accidents at three construction sites in a country were monitored. The total numbers of accidents at the three randomly selected sites were 52, 105, and 38. Summary statistics for these three sites are: x = 65 and s= 35.3. Suppose an occupational safety inspector claims that the average number of occupational accidents at all of the country's construction sites is less than 71.
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