Most sports injuries are immediate and obvious, like a broken leg. however, some can be more subtle, like the neurological damage that may occur when soccer players repeatedly head a soccer ball. to examine long-term effects of repeated heading, downs and abwender (2002) examined two different age groups of soccer players and swimmers. the dependent variable was performance on a conceptual thinking task. following are hypothetical data, similar to the research results.

a. use a two-factor anova with = .05 to evaluate the main effects and interaction.
b. calculate the effects size (n2) for the main effects and the interaction.
c. briefly describe the outcome of the study
factor b: age
college older
soccer n= 20 n=20
factor a: m=9 m= 4
sport t= 180 t = 80
ss= 380 ss= 390

swimming n= 20 n = 20
m = 9 m = 8
t = 180 t =160
ss = 350 ss= 400

ex2 = 6360

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step-by-step explanation:

just copy and paste it.

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option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.