Mathematics, 27.05.2021 05:50 batpool3375
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 63 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 1%? You may assume that the level of ground arsenic is normally distributed in the area.
Sample Reults: 31 43 72 68 60 10 32 91
Enter the null hypothesis for this test.
H
0
H
0
Enter the alternative hypothesis for this test.
H
1
:
H
1
:
Is the original claim located in the null or alternative hypothesis?
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?
What is the correct interpretation of this decision?
Using a % level of significance, there sufficient evidence to the claim that the average level of arsenic in the groundwater is less than 63 parts-per-million (ppm).
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A housing development can only build on a certain plot of land if can show that the average level of...
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