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A study by hovatta et.al(2005) examined the genetic basis of anxiety-like behavi

ID: 2957877 • Letter: A

Question

A study by hovatta et.al(2005) examined the genetic basis of anxiety-like behavior using four strains of inbred mice. The data, summarized in the following table, give the mean number of minutes(out of 5min) that mice spent in an "open field" chamber; more time in the open field indicates less anxiety.SE is the standard error of the mean. Assume that the measurement is normally distributed within each strain, and that the four inbred strains were randomly sampled from a large population of inbred strains available.

Strain Y(min)[mean]       SEy     n
A           0.61               0.123     7
B          0.34                0.164     7
C          1.07                0.140     7
D          1.49                0.093     7

a) What does SEy measure? Explain.
b) Use ANOVA to test whether there is significant variation among strains in the mean time spent in the open filed chamber.
c)Is this a random-effects or a fixed effects ANOVA? Explain.

Explanation / Answer

Given the SE is the standard error of the mean that measures the value of deviation from the mean. How much variate to the variables. tell me how to finsd the ANOVA to these