+ a. Enter the null hypothesis for this test. Ho Select an answer ? b. Enter the alternative hypothesis for this test. H₁: Select an answer ? 86 c. Is the original claim located in the null or alternative hypothesis? Select an answer

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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3
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.
Ho Select an answer
?
b. Enter the alternative hypothesis for this test.
H₁: Select an answer ?
c. Is the original claim located in the null or alternative hypothesis?
Select an answer
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?
Select an answer
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).
Transcribed Image Text:3 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. Ho Select an answer ? b. Enter the alternative hypothesis for this test. H₁: Select an answer ? c. Is the original claim located in the null or alternative hypothesis? Select an answer 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? Select an answer 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).
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
a. Enter the null hypothesis for this test.
Ho Select an answer ?
b. Enter the alternative hypothesis for this test.
H✔ Select an answer
?
c. Is t
Se
O
μ
X
p
49 81 86
ated in the null or alternative hypothesis?
Р
X
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?
Select an answer
Using a
g. What is the correct interpretation of this decision?
% level of significance, there Select an answer
sufficient evidence to
Select an answer
:11:. (mm)
Transcribed Image Text: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 a. Enter the null hypothesis for this test. Ho Select an answer ? b. Enter the alternative hypothesis for this test. H✔ Select an answer ? c. Is t Se O μ X p 49 81 86 ated in the null or alternative hypothesis? Р X 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? Select an answer Using a g. What is the correct interpretation of this decision? % level of significance, there Select an answer sufficient evidence to Select an answer :11:. (mm)
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