?×3/4=-6
what does ? equal

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

I’m still confused on how to work the percentages

Of the 304 people who attended a school play, 5/8 were students. how many of the people who attended were students.