7.25 Colored string preferred by chickens. Animal behavi- orists have discovered that the more domestic chickens peck at objects placed in their environment, the healthier the chickens seem to be. White string has been found to be a particularly attractive pecking stimulus. In one ex- periment, 72 chickens were exposed to a string stimulus. Instead of white string, blue string was used. The number of pecks each chicken took at the blue string over a speci- fied interval of time was recorded. Summary statistics for the 72 chickens were x = 1.13 pecks and s = 2.21 pecks (Applied Animal Behaviour Science, Oct. 2000). a. Use a 99% confidence interval to estimate the popula- tion mean number of pecks made by chickens pecking at blue string. Interpret the result. b. Previous research has shown that μ = 7.5 pecks if chick- ens are exposed to white string. Based on the results you found in part a, is there evidence that chickens are more apt to peck at white string than blue string? Explain.
7.25 Colored string preferred by chickens. Animal behavi- orists have discovered that the more domestic chickens peck at objects placed in their environment, the healthier the chickens seem to be. White string has been found to be a particularly attractive pecking stimulus. In one ex- periment, 72 chickens were exposed to a string stimulus. Instead of white string, blue string was used. The number of pecks each chicken took at the blue string over a speci- fied interval of time was recorded. Summary statistics for the 72 chickens were x = 1.13 pecks and s = 2.21 pecks (Applied Animal Behaviour Science, Oct. 2000). a. Use a 99% confidence interval to estimate the popula- tion mean number of pecks made by chickens pecking at blue string. Interpret the result. b. Previous research has shown that μ = 7.5 pecks if chick- ens are exposed to white string. Based on the results you found in part a, is there evidence that chickens are more apt to peck at white string than blue string? Explain.
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:7.25 Colored string preferred by chickens. Animal behavi-
orists have discovered that the more domestic chickens
peck at objects placed in their environment, the healthier
the chickens seem to be. White string has been found to
be a particularly attractive pecking stimulus. In one ex-
periment, 72 chickens were exposed to a string stimulus.
Instead of white string, blue string was used. The number
of pecks each chicken took at the blue string over a speci-
fied interval of time was recorded. Summary statistics for
the 72 chickens were x = 1.13 pecks and s = 2.21 pecks
(Applied Animal Behaviour Science, Oct. 2000).
a. Use a 99% confidence interval to estimate the popula-
tion mean number of pecks made by chickens pecking
at blue string. Interpret the result.
b. Previous research has shown that μ = 7.5 pecks if chick-
ens are exposed to white string. Based on the results you
found in part a, is there evidence that chickens are more
apt to peck at white string than blue string? Explain.
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