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What is the test statistic for the given statistics? What is the p-value for this test? What is the decision based on the given statistics? B What is the correct interpretation of this decision?

What is the test statistic for the given statistics? What is the p-value for this test? What is the decision based on the given statistics? B What is the correct interpretation of this decision?

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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Please answer d-g
3:27 ◄ Snapchat A housing development can only build on a certain plot of land if can show that the average level of arsenic in the groundwater is less than 84 parts-per-million (ppm). Soil samples are drawn from the site and tested in a lab The results of the samples (in ppm) are given below. Is there enough evidence to say that the land is ready for development using a level of significance of 10%? You may assume that the level of ground arsenic is normally distributed in the area. Sample Reults: 70 73 57 43 85 49 81 86 a. Enter the null hypothesis for this test. H₂ Select an answerBB b. Enter the alternative hypothesis for this test. H₁: Select an answer B D c. Is the original claim located in the null or alternative hypothesis? d. What is the test statistic for the given statistics? e. What is the p-value for this test? f. What is the decision based on the given statistics? B g. What is the correct interpretation of this decision? Using a % level of significance, there Select an answer sufficient evidence to Select an answer the claim that the average level of arsenic in the groundwater is less than 84 parts-per-million (ppm). X
Transcribed Image Text:3:27 ◄ Snapchat A housing development can only build on a certain plot of land if can show that the average level of arsenic in the groundwater is less than 84 parts-per-million (ppm). Soil samples are drawn from the site and tested in a lab The results of the samples (in ppm) are given below. Is there enough evidence to say that the land is ready for development using a level of significance of 10%? You may assume that the level of ground arsenic is normally distributed in the area. Sample Reults: 70 73 57 43 85 49 81 86 a. Enter the null hypothesis for this test. H₂ Select an answerBB b. Enter the alternative hypothesis for this test. H₁: Select an answer B D c. Is the original claim located in the null or alternative hypothesis? d. What is the test statistic for the given statistics? e. What is the p-value for this test? f. What is the decision based on the given statistics? B g. What is the correct interpretation of this decision? Using a % level of significance, there Select an answer sufficient evidence to Select an answer the claim that the average level of arsenic in the groundwater is less than 84 parts-per-million (ppm). X
Expert Solution
Step 1

Given that 

Population mean =84

Sample size n =8

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