Researchers wanted to know if living in schools protects minnows from predators. The researchers placed different numbers of minnows into separate aquaria. Then, the researchers counted how many times per minute predatory fish approached the schools. Calculate the sample means, ?¯,x¯, and sample standard deviations, ?,s, for the number of times per minute a predator approached each school size. Round ?¯x¯ to one decimal place. Round ?s to two decimal places. Minnow school size Trial 3 5 10 15 20 1 0.9 0.7 0.4 0.4 0.1 2 0.8 0.8 0.5 0.5 0.1 3 0.7 0.9 0.6 0.3 0.2 4 1.1 0.6 0.8 0.2 0.3 5 1.0 1.0 0.7 0.6 0.3
Researchers wanted to know if living in schools protects minnows from predators. The researchers placed different numbers of minnows into separate aquaria. Then, the researchers counted how many times per minute predatory fish approached the schools. Calculate the sample means, ?¯,x¯, and sample standard deviations, ?,s, for the number of times per minute a predator approached each school size. Round ?¯x¯ to one decimal place. Round ?s to two decimal places. Minnow school size Trial 3 5 10 15 20 1 0.9 0.7 0.4 0.4 0.1 2 0.8 0.8 0.5 0.5 0.1 3 0.7 0.9 0.6 0.3 0.2 4 1.1 0.6 0.8 0.2 0.3 5 1.0 1.0 0.7 0.6 0.3
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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Researchers wanted to know if living in schools protects minnows from predators. The researchers placed different numbers of minnows into separate aquaria. Then, the researchers counted how many times per minute predatory fish approached the schools.
Calculate the sample means, ?¯,x¯, and sample standard deviations, ?,s, for the number of times per minute a predator approached each school size. Round ?¯x¯ to one decimal place. Round ?s to two decimal places.
Minnow school size | |||||
---|---|---|---|---|---|
Trial | 3 | 5 | 10 | 15 | 20 |
1 | 0.9 | 0.7 | 0.4 | 0.4 | 0.1 |
2 | 0.8 | 0.8 | 0.5 | 0.5 | 0.1 |
3 | 0.7 | 0.9 | 0.6 | 0.3 | 0.2 |
4 | 1.1 | 0.6 | 0.8 | 0.2 | 0.3 |
5 | 1.0 | 1.0 | 0.7 | 0.6 | 0.3 |
![x for school of 3:
approaches per
minute
s for school of 3:
approaches per minute
x for school of 5:
approaches per minute
s for school of 5:
approaches per minute
x for school of 10:
approaches per minute
s for school of 10:
approaches per minute
x for school of 15:
approaches per minute
s for school of 15:
approaches per minute
x for school of 20:
approaches per minute
s for school of 20:
approaches per minute](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc4436f5f-01e3-4d46-baa5-3f23cf388ae7%2F8c931ab4-eb06-4820-849d-f619b6268b3e%2Fsgkwleu_processed.png&w=3840&q=75)
Transcribed Image Text:x for school of 3:
approaches per
minute
s for school of 3:
approaches per minute
x for school of 5:
approaches per minute
s for school of 5:
approaches per minute
x for school of 10:
approaches per minute
s for school of 10:
approaches per minute
x for school of 15:
approaches per minute
s for school of 15:
approaches per minute
x for school of 20:
approaches per minute
s for school of 20:
approaches per minute
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