Sarah Jones earns $620 per week selling life insurance for Farmer’s Insurance plus 4% of sales over $5,750. Sarah’s sales this month (four weeks) are $20,000. How much does Sarah earn this month?

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