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.