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city's environmental engineers are studying the amount of lead in drinking water. able amount being 34 parts per million. Analyses of drinking water samples for 75 a neighborhood of the city gave the following information on lead levels (in parts per million): ze: 75 .9 Deviation: 6 onmental engineers set up the null and alternative hypotheses as follows: 4 34 that the p-value = 0.099 and use an a=0.01 level of significance. Do the environmental engineers have evidence to say the levels of lead in the water are significantly higher than the standard? O Since the p-value < a. there is insufficient evidence that the levels of lead are significantly higher than the standard. O Since the p-value a, there is insufficient evidence that the levels of lead are significantly higher than the

city's environmental engineers are studying the amount of lead in drinking water. able amount being 34 parts per million. Analyses of drinking water samples for 75 a neighborhood of the city gave the following information on lead levels (in parts per million): ze: 75 .9 Deviation: 6 onmental engineers set up the null and alternative hypotheses as follows: 4 34 that the p-value = 0.099 and use an a=0.01 level of significance. Do the environmental engineers have evidence to say the levels of lead in the water are significantly higher than the standard? O Since the p-value < a. there is insufficient evidence that the levels of lead are significantly higher than the standard. O Since the p-value a, there is insufficient evidence that the levels of lead are significantly higher than the

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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Suppose a city's environmental engineers are studying the amount of lead in drinking water. An acceptable amount being 34 parts per million. Analyses of drinking water samples for 75 homes in a neighborhood of the city gave the following information on lead levels (in parts per million): Sample Size: 75 Mean: 34.9 Standard Deviation: 6 The environmental engineers set up the null and alternative hypotheses as follows: H₁: μ = 34 Ha: μ> 34 They find that the p-value = 0.099 and use an a=0.01 level of significance. Do the environmental engineers have enough evidence to say the levels of lead in the water are significantly higher than the standard? A. O Since the p-value < a. there is insufficient evidence that the levels of lead are significantly higher than the standard. B. O Since the p-value < a, there is sufficient evidence that the levels of lead are significantly higher than the standard. C. O Since the p-value > a, there is insufficient evidence that the levels of lead are significantly higher than the standard. D. O Since the p-value > a, there is sufficient evidence that the levels of lead are significantly higher than the standard.
Transcribed Image Text:Suppose a city's environmental engineers are studying the amount of lead in drinking water. An acceptable amount being 34 parts per million. Analyses of drinking water samples for 75 homes in a neighborhood of the city gave the following information on lead levels (in parts per million): Sample Size: 75 Mean: 34.9 Standard Deviation: 6 The environmental engineers set up the null and alternative hypotheses as follows: H₁: μ = 34 Ha: μ> 34 They find that the p-value = 0.099 and use an a=0.01 level of significance. Do the environmental engineers have enough evidence to say the levels of lead in the water are significantly higher than the standard? A. O Since the p-value < a. there is insufficient evidence that the levels of lead are significantly higher than the standard. B. O Since the p-value < a, there is sufficient evidence that the levels of lead are significantly higher than the standard. C. O Since the p-value > a, there is insufficient evidence that the levels of lead are significantly higher than the standard. D. O Since the p-value > a, there is sufficient evidence that the levels of lead are significantly higher than the standard.
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