Identify the assumption(s) made when computing the 95% confidence interval for the proportion and conducting th hypothesis test. The upstream fish species counts have a normal distribution in the population. The sampling units, or tributaries, are randomly sampled from the population. The paired differences in fish species counts have a normal distribution in the population. The downstream fish species counts have a normal distribution in the population.

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Chapter1: Starting With Matlab
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Researchers studying the number of electric fish species living in various parts of the Amazon basin were interested in
whether the presence of tributaries affected the local number of electric fish species in the main rivers (Fernandes et al.
2004). They counted the number of electric fish species above and below the entrance point of a major tributary at 12
different river locations. The results are listed in the table.
Tributary
Içá
Jutaí
Japurá
Coari
Purus
Manacapuru
Negro
Madeira
Trombetas
Tapajós
Xingu
Tocantins
Upstream number
of species
14
11
8
5
10
5
23
29
19
16
25
10
Downstream
number of species
19
18
8
7
DOHODNE
16
6
24
30
16
20
21
12
Download the data in the format you prefer.
CSV Excel JMP Mac-Text Minitab PC-Text R SPSS TI CrunchIt!
Identify the assumption(s) made when computing the 95% confidence interval for the proportion and conducting the
hypothesis test.
The upstream fish species counts have a normal distribution in the population.
The sampling units, or tributaries, are randomly sampled from the population.
The paired differences in fish species counts have a normal distribution in the population.
The downstream fish species counts have a normal distribution in the population.
Transcribed Image Text:Researchers studying the number of electric fish species living in various parts of the Amazon basin were interested in whether the presence of tributaries affected the local number of electric fish species in the main rivers (Fernandes et al. 2004). They counted the number of electric fish species above and below the entrance point of a major tributary at 12 different river locations. The results are listed in the table. Tributary Içá Jutaí Japurá Coari Purus Manacapuru Negro Madeira Trombetas Tapajós Xingu Tocantins Upstream number of species 14 11 8 5 10 5 23 29 19 16 25 10 Downstream number of species 19 18 8 7 DOHODNE 16 6 24 30 16 20 21 12 Download the data in the format you prefer. CSV Excel JMP Mac-Text Minitab PC-Text R SPSS TI CrunchIt! Identify the assumption(s) made when computing the 95% confidence interval for the proportion and conducting the hypothesis test. The upstream fish species counts have a normal distribution in the population. The sampling units, or tributaries, are randomly sampled from the population. The paired differences in fish species counts have a normal distribution in the population. The downstream fish species counts have a normal distribution in the population.
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