
(a)
To state the null and alternative hypotheses for this test.
(a)

Answer to Problem 16E
Explanation of Solution
In this question, the data is collected from the water of streams about the pH level and the substrate. The boxplot of the same is given. Thus, the null hypothesis states that the mean of both groups are equal and the alternative hypothesis states that the claim of a difference.
(b)
To explain do the assumptions and conditions appear to be met.
(b)

Answer to Problem 16E
All conditions are met.
Explanation of Solution
In this question, the data is collected from the water of streams about the pH level and the substrate. The boxplot of the same is given. Thus, the conditions to be satisfied are:
Random condition: It is satisfied because we assume that the samples of water from streams were randomly selected.
Independent condition: It is satisfied because we assume that the streams with different types of rocks do not have the same water source.
Normal condition: It is satisfied because the degrees of freedom are
(c)
To find out what conclusion would you draw.
(c)

Answer to Problem 16E
There is sufficient evidence to support the claim of a difference.
Explanation of Solution
In this question, the data is collected from the water of streams about the pH level and the substrate. The boxplot of the same is given. It is given that the P-value is:
And we know that if the P-value is less than or equal to the significance level then the null hypothesis is rejected. Thus,
Thus, we conclude that there is sufficient evidence to support the claim of a difference.
Chapter 24 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
Additional Math Textbook Solutions
A First Course in Probability (10th Edition)
Elementary Statistics (13th Edition)
Calculus: Early Transcendentals (2nd Edition)
Elementary Statistics: Picturing the World (7th Edition)
Intro Stats, Books a la Carte Edition (5th Edition)
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