Mathematics, 15.10.2019 02:00 blakestuhan

Aresearcher measures the mean time (in seconds) it takes two groups of children to complete an activity test. she finds that group a (m=4 seconds) compleated the task more quickly than group b (m=10 seconds). she then computes a weighted mean for both groups combined and calculates= 6. based on the information provided, which group had a larger sample size?

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Aresearcher measures the mean time (in seconds) it takes two groups of children to complete an activ...