and thicker than those in Lower Laguna Mac ammonium concentration, in the two locations on sediment ammonium concentration, in o Equality of variances is not ass pou
and thicker than those in Lower Laguna Mac ammonium concentration, in the two locations on sediment ammonium concentration, in o Equality of variances is not ass pou
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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Transcribed Image Text:Researchers at UT Austin noticed that the seagrass beds in Corpus Cristi Bay (CCB)
were taller and thicker than those in Lower Laguna Madre (LLM). They compared the
sediment ammonium concentration, in the two locations. Following are the summary
statistics on sediment ammonium concentration, in micromoles, obtained by the
researchers. Equality of variances is not assumed.
CCB: X₁
115.1, s₁= 79.4, n₁ = 51
LLM: X₂ = 24.3, S₂ 10.5, n₂: 19
=
a. At the 1% significance level, is there sufficient evidence to conclude that the mean
sediment ammonium concentration in CCB exceeds that in LLM?
b. Determine a 98% confidence interval for the difference μ1-µ2, between the mean
sediment ammonium concentrations in CCB and LLM. Interpret your answer in (a)
in words.
c. Do the results in (a) and (b) provide the consistent results? Explain.
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