Reports say that the mean birth weight of babies of European heritage is 3.5 kg. Marta wants to perform a significance test to see if this holds true in her nation. She takes a random sample of babies and observes a mean birth weight of xˉ=3.43 kg. Here's Marta's null hypothesis:H0 : The mean birth weight in this nation is ... What is an appropriate way for Marta to finish her null hypothesis statement? a ... not equal to 3.43 kg. b ... equal to 3.43 kg. c ... equal to 3.5 kg. d ... equal to 3.5 kg.
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