Calculate observed value of the appropriate test statistic

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Reference no: EM131029194

A survey published in the American Journal of Sports Medicine2 reported the number of meters (m) per week swum by two groups of swimmers-those who competed exclusively in breaststroke and those who competed in the individual medley (which includes breaststroke). The number of meters per week practicing the breaststroke was recorded for each swimmer, and the summary statistics are given below. Is there sufficient evidence to indicate that the average number of meters per week spent practicing breaststroke is greater for exclusive breaststrokers than it is for those swimming individual medley?

Specially

	Exclusively Breaststroke	Individual Medley
Sample site	130	80
Sampk mean (m)	9017	5853
Sample standard deviation (m)	7162	1961
Population mean	μ1	μ2

a State the null and alternative hypotheses.

b What is the appropriate rejection region for an α = .01 level test?

c Calculate the observed value of the appropriate test statistic.

d What is your conclusion?

e What is a practical reason for the conclusion you reached in part (d)?

Reference no: EM131029194

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