Mathematics, 06.08.2019 03:30, myronpacis1128
How much training time does it take to become a world-class breaststroke swimmer? a survey published in the american journal of sports medicine reported the number of meters per week swum by two groups of swimmers - those who competed only in breaststroke and those who competed only in breaststroke and those who competed in the individual medley (which include breaststroke). the number of meters per week practicing the breaststroke swim was recorded and the summary statistics are shown below. breaststroke: sample size 130, sample mean 9017, sample standard deviation 7162individual medley: sample size 80, sample mean 5853, sample standard deviation 1961is there sufficient evidence to indicate a difference in the average number of meters swum by these two groups of swimmers? test using α=.01.
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