Assume that newborn girls have birth weights with a mean of 3055 grams and a standard deviation of 692 grams. A random sample of 100 newborn girls is obtained and they have a mean birth weight of 2869 grams. What is the probability of randomly selecting another 100 newborn girls and getting a mean birth weight that is 2869 grams or lower? Does it seem like a sample mean of 2869 grams is unusual?

Mr. and mrs. wallace have decided to buy a car for $21,600. they finance $15,000 of it with a 5-year auto loan at 2.9% arp. what will be their monthly payment be? a. $268.20 b. $268.86 c. $269.54 d. $387.16 (monthly car loan payment per $1,000 borrowed) i need !

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.